【单选题】
We decided to _______ to help the sick children with their homework.
【单选题】
You should _______ your shoes before you enter the dancing room.
【单选题】
There are ________ people in front of the cinema gate so we have to wait ________ time to get into the cinema.
【单选题】
There are four pairs of socks to ______, but the woman doesn’t know ______ to buy.
【单选题】
Last month Miss Han ______ a doctor.
【单选题】
Light waves and heart waves are all electromagnetic. ______ are radio waves.
【单选题】
Ancient Chang’an was seven times _____ the size of today’s Xi’an city.
【单选题】
How difficult it is ______ the modern world without oil.
【单选题】
The exchange of goodwill mission greatly ______ a better understanding between the two countries.
【单选题】
I like this jacket better than that one, but it costs twice ______.