My grammar books say that the pronoun THAT should be used after superlatives in relative clauses or after only, first, second. I am wondering if I can use who or which in these sentences. 1. He was the most interesting person that/ /WHO/WHOM I have ever met. 2. It is the first house that/WHICH he bought.

Please help me find the mistakes of these sentences. 1. She turned on her radio at the lowest in order not to disturb the others at night. 2. There are many factors causing from men. Why not caused by men?

Is this sentence correct? The rain makes playing tennis impossible? Does it mean the same as 'The rain makes it impossible to play tennis.'

It is brave of her to start her own business. She is brave to start her own business. Do the two sentences mean the same?

When Vietnam began integrating into the international economy a few decades ago, production in craft villages developed strongly. Does the sentence change its meaning if I put 'when' in the middle of the sentence?

Which question word can I use? When/what is the best time to visit ...?

Can you please help me with this sentence? I believe this reported speech sentence: people said that he had move to Australia, is correct. However, my textbook says: people said that he moved to Australia is also correct without any clear explanation. Can it mean that because the fact that he moved to the Australia was a true incident, we don't need to change the verb form here?

Which one is correct? What present did you give David? What present did you give TO David?

It'll be suprising unless Rachel passes/ if Rachel doesn't pass the exam. My textbook says the sentence with if is the correct answer. My question is why unless is not correct when it means if...not.