Could anyone help me to check whather I wrote these sentences or phrase correctly? 1.Next, she rewrote the first sentence using reducing relative clauses and asked students to do the rest. 2.the grammar point “reducing relative clauses” 3.The next exercise is reducing the given relative clauses. (should I use "the given relative clauses" or "given relative clauses"?) 4.18 questions were answered and 7 was left unsolved as homework for students. (7 "were" or "was"?) 5.Although being observed by other teachers and trainee teachers, the teacher was very confident. ("very" or "really confident"?, Is "although being observed..." grammatically correct?) 6.engage students’ interests and excitement in the lesson 7. weak students learn from strong students 8.She used English for short and simple sentences or instructions and use Vietnamese to explain complex grammar points. For instance, while she used Vietnamese to remind students of rules to use the grammar points and used English to elicit oral corrections, and give short instructions.