It________me half an hour to reach the top of the mountain．
| A．spent |
| B．cost |
| C．took |
| D．paid |
Shanghai is bigger than _____ city in China.
A. any B. other C. any other
The teacher tells us not ______a hat in class.
A. wear B. wearing C. to wear
Most animals walk ____ four legs.
A. of B. to C. on
What do you usually do____ Sunday mornings.
A. in B. at C. on
In China, summer is from _______ to _______.
A. May; September
B. October; December
C. June; August