They have been skating __________.
A.for three hours | B.since three hours ago |
C.three hours ago | D.since three hours |
Hefor ten years.
A.has been married | B.married | C.got married | D.has married |
Students should learn howproblems.
A.solve | B.solving | C.can solve | D. to solve |
They arrivedShanghai a cold morning.
A.in: in | B.in: on | C.at: on | D.at: in |
Who designed this game?
Itby Tom in 1999.
A.is designed | B.designs | C.was designed | D.designed |
It is importantpeoplelearn team spirit.
A.of; of | B.of; to | C.for, to | D.to; to |