Chọn đáp án đúng để điền vào chỗ tróng

Bài 1 chọn đáp án đúng để điền vào chỗ tróng 
C1 the doctor are trying their best ........... the injured wonma
A save           B saving        C to have saved      D to save
C2 i think you ........better not worry too much about that 
A could        B will         C had          D should
C3 exposure to pollution can cause many serious illncsses ..........to death
A led          B leanding       C which led        D that led 
C4 the more you worry about the problem ,.............seriousit will become 
A the least             B the most         C the more       D the fewer
C5 most of Hai 's friends like playing with him as he has a good ......... humor
A in          B of        C for        D with
C6 if there were no air , life on earth.............
A would exist        B won't exist       C dosen't exist        D would'n exist
C7 you haven't eaten anything for two days . You .......... hungry now 
A must be       B might be        C must have been                D might have been
Bài 2 viết lại các câu sau sao cho nghĩa ko thay đổi 
C1 ' Where will you stay during your holiday in Da Lat" He said to me 
He asked .........
I've never read such an interesting book befor
It's