"We have to wash up the dishes quickly, my parents are bound to come back home." 

Because you are using a sense of urgency when you say "We have to wash up the dishes <em>quickly</em>," you might change the second part to say "my parents are bound to come back home <em>soon</em>." We know your parents will "come back home" at some point so it makes more sense to add when.

"The baby is awake now, so give it its teat, because I think he's bound to cry."

Just for more realistic conversation you would just change this to "The baby is awake now so give him some food (because/or) he is bound to cry!" "Or" might make more sense, but "because" works as well. Your use of "bound to" is correct here though :)

"The weather isn't nice. Clouds are grey and temperatures are falling under zero. I think it's bound to snow." -Great!

"My brother told you he was in space in 2009? Do not trust him, he surely lied to you. He always makes up lots of interesting stories." -Great!!!

"My brother lies everytime he talks to someone. I can't(or don't) believe him anymore." -Perfect!

"When you're in danger, anything you say can save you. So do not hesitate to tell lies." -Good

"Learning a language is difficult. What are the main difficulties? Speaking? Writing? Singing? - I have difficulty speaking French, because the words are hard to pronounce." -Great job! I will only say that this is more conversational. If you were to write this you might change it to "The main difficulties are speaking, writing, and singing. I have..."

"I have no difficulty skiing on a black piste." Good :)

I think this is a great exercise in getting use to using different words and phrases. I might have to do this with Dutch!! You are really doing great. Keep up the good work!

-Siobhan

I decided to learn some words everyday.

I own a dictionnary called "All in One English" and I think it's quite good. From now on, I will pick up three words from it everyday and will try to make sentences by using them. It would be great if you could help me to improve my writing skills, and correct my article.

The first word I will use is "bound to". The two examples in the dictionary are "It's bound to rain" and "he's bound to come." I need/have to find other ones. Hmm... Let me think about it! Okay, let's try:
"We have to wash up the dishes quickly, my parents are bound to come back home." Is this first one correct?
"The baby is awake now, so give it its teat, because I think he's bound to cry."
"The weather isn't nice. Clouds are grey, temperatures are falling under zero, I think it's bound to snow."

The second word I chose is "lie", "tell lies." There is no example for this word in my dictionary, so I'll try to make sentences by myself:
"My brother told you he was in space in 2009? Do not trust him, he surely lied to you. He always makes up lots of interesting stories."
"My brother lies everytime he talks to someone. I can't believe him anymore."
"When you're in danger, everything you say can save you. So do not hesitate to tell lies."

The last words for today is "difficulty" (including "have difficulty doing something", "have no difficulty doing something":
"Learning a language is difficult. What are the main difficulties? Speaking? Writing? Singing? - I have difficulty speaking French, because the words are hard to pronounce."
"I have no difficulty skiing on a black piste."

Okay, it's enough for today, I think. Can you help me correcting my mistakes? Thank you!