The Eiffel Tower________by the French engineer Alexandre Gustave Eiffel for the Paris Exposition(巴黎博览会)of 1889．
A．designed
B．was designed
C．will design
D．will be designed
—I won’t come to the party unless Sue________，too．
—You mean if Sue comes，you will come．
A．will invite
B．invites
C．invited
D．is invited
It________me half an hour to reach the top of the mountain．
A．spent
B．cost
C．took
D．paid
Fifteen-year-olds________to have jobs in China．
A．is not allowed
B．are allowed
C．is allowed
D．are not allowed
A knife can be used for________(cut)bread．
—Why not go to Lao She Teahouse tonight?
—________．
A．It doesn’t matter
B．Thank you
C．Sorry to hear that
D．Sounds great
