__________ you understand the rule, you will have no further difficulty.

A. his B. your

C. their D. one's

A. You speak

B. That's it

C. It’s up to you

D. You got it

A. Mr. Smith stole the necklace

B. Mr. Smith should steal the necklace

C. Mr. Smith had stolen the necklace

D. Mr. Smith steal the necklace

A. the... a

B. an... a

C. a...不填

D. 不填...the

A. that she turned up

B. when she turned up

C. did she turn up

D. had she turned up

A. in 123 ,King Street

B. at 123 ,King Street

C. in King Street, 123

D. at King Street, 123

A. rather B. fairly

C. quite D. lot

A. dropping

B. to have dropped

C. having dropped

D. to be dropped

A. in case B. as well

C. as least D. in need

A. a good voice enough

B. a good enough voice

C. a voice enough good

D. an enough good voice