—Mrs White, why are you standing here?—I’m waiting for my son. He ___________ back from school.
The Eiffel Tower________by the French engineer Alexandre Gustave Eiffel for the Paris Exposition(巴黎博览会)of 1889.
—I won’t come to the party unless Sue________,too. —You mean if Sue comes,you will come.
It________me half an hour to reach the top of the mountain.
Fifteen-year-olds________to have jobs in China.
—Why not go to Lao She Teahouse tonight? —________.