31. It is in the year of 2010 a severe drought hits Yunnan province.
| A．until | B．that | C．before | D．When |
_____ is mentioned above, the number of the students in the senior schools is increasing.
A which B As C That D It
How are you going to _______ such problems?
| A．do with | B．deal with | C．deal | D．do up |
Some pre-school children go to a day care center, ______ they learn simple games and songs.
| A．which | B． when | C． that | D． where |
The boys were playing football on the ground. Sam didn’t want to _______ them.
| A．take part in | B．join in | C．join | D．attend |
When you are home, give a call to let me know you ______ safely.
| A．are arriving | B．have arrived | C．had arrived | D．will arrive |