_____ the importance of wearing seat belts while driving.

A. that he saw B. had he seen

C. did he see D. that he had seen

A. you can find B. is found

C. can you find D. has been found

A. Because B. for

C. As D. So

A. didn‘t there B. used there

C. wasn‘t there D. did there

A. did it B. didn‘t it

C. do it D. does it

A. didn‘t he B. didn’t they

C. did he D. did they

A. that B. as

C. although D. however

A. that C. such

B. this D. it

A. uncertain C. unfit

B. unable D. unlike