My uncle is a writer. He ______ many books since he was young.

A. send

B. sent

C. will send

D. has sent

A. How

B. Who

C. What

D. Where

A. is

B. are

C. was

D. were

A. anybody

B. somebody

C. everybody

D. nobody

A. can

B. should

C. must

D. need

A. easy

B. easier

C. easiest

D. the easiest

A. and

B. but

C. or

D. so

A. in

B. on

C. at

D. for

A. his

B. her

C. its

D. their

A. when Michelle Obama will arrive in Beijing

B. when will Michelle Obama arrive in Beijing

C. when Michelle Obama arrived in Beijing

D. when did Michelle Obama arrive in Beijing