The boy____ a blue shirt is ____ duty .
A. in; in B. at; on C. in；on D. in; in
Thank you for ____ a new bike for me.
A. buy B. to buy C. buying D. bought
Autumn comes ____summer.
A. before B. after C. in D. between
Please____the seed____ soil .
A. cover; in B. cover; with
C.covered;with D. cover; on
Don’t forget____ the door when you go out.
A. close B. closing C. to close D. closed
It is pleasant ____ in summer.
A. swimming B.swam C. to swim D. swims
