Don't forget to protect your eyes well____ you take online classes．
OK． Thank you， Sir．（ ）
A．ifB．thoughC．as if
Jeff，could you tell me how to order a taxi through"Didi"？
．（ ）
A．You're welcomeB．Sure
| A． |
Take it easy |
B． |
It doesn't matter |
Nowadays，some robots are very human﹣like．They walk and dance．（ ）
| A． |
can |
B． |
must |
C． |
need |
D． |
have to |
Can John play soccer with us，Mrs．Black？
One moment，please．He on the phone to his cousin．（ ）
| A． |
talks |
B． |
talked |
C． |
talking |
D． |
is talking |
will the 2016 Summer Olympic Games be held in Brazil？
In August．（ ）
| A． |
When |
B． |
How |
C． |
Why |
D． |
Where |
Which city would you like to live in，Beijing or Shanghai？
．I'd like to choose Kunming．（ ）
| A． |
Either |
B． |
Both |
C． |
Neither |
D． |
None |