At least 300 million people are using QQ_____ by Ma Huateng to chat online.
| A．create | B．created | C．creating | D．creates |
Many medical workers are busy ________ their work during lunch time.
| A． |
to |
B． |
of |
C． |
from |
D． |
with |
-To enjoy your holiday，you'd better find some ideas for a short trip in a travel guide．
- ．（ ）
| A． |
That's a good idea |
B． |
You're welcome |
| C． |
It doesn't matter |
D． |
Don't worry |
-Do you know ？
-In the 1960s．（ ）
| A． |
where Havoc in Heaven was created |
| B． |
when Havoc in Heaven was created |
| C． |
where was Havoc in Heaven created |
| D． |
when was Havoc in Heaven created |
you want to watch television，I will turn it off now．（ ）
| A． |
Since |
B． |
As |
C． |
Until |
D． |
Unless |
A team was in the company to look into the problem．（ ）
| A． |
set up |
B． |
caught up |
C． |
taken up |
D． |
lighted up |