______ you talk or write a message to someone, you show your language skills to others.
| A．Every time | B．Some time | C．At times | D．The time |
Many buildings ______ on both sides of the street the next year.
| A．will build | B．were built |
| C．are to be built | D．will be built |
I need to call my friend David coat I took away by mistake yesterday.
| A．whose | B．of which | C．that | D．of whom |
is mentioned above, the number of the students who would like to further their education abroad is increasing.
| A．Which | B．As | C．That | D．It |
I visited Mr. Johnson during his stay in Shanghai he attended a most important conference there.
| A．when | B．which | C．where | D．in which |
The time is drawing near food raised in space will directly benefit human below.
| A．where | B．when | C．whether | D．why |