Câu hỏi: He is very worried ......... his new job because he is not quite prepared .......... working.

A. on / over

B. to / off 

C. about / for

D. in / at

Câu 1: As I was ....... of the change in the program, I arrived half an hour late for the rehearsal.

A. unaware

B. unconscious

C. unable

D. unreasonable

Câu 2: Instead ......... .petrol, cars will only run .......... solar energy and electricity.

A. of / on

B. for / by

C. in / over

D. from/ upon

Câu 3: Education in many countries is compulsory ....... the age of 16.

A. for

B. when

C. until

D. forwards

Câu 4: His book is different (about/from/for/between) mine.

A. about

B. from

C. for

D. between

Câu 5: Today, women are increasingly involved ....... the politics.

A. of

B. in

C. with

D. from

Câu 6: Smoking is harmful (for/with/to/about) our health.

A. for

B. with

C. to

D. about