. Listen! Do you hear someone __________for help?
| A．calling | B．call | C．to call | D．called |
It is playing computer games _______ he spends so much time that he fails all the exams
| A．which | B．what | C．in which | D．that |
The train he was looking forward to ______ only a few minutes ago.
A arrives B arrived
C arriving D had arrived
Persons under 16 ______ not be employed in our country．
| A．shall | B．can | C．may | D．will |
Selecting a proper personal computer is no easy task because technology _____ so rapidly.
A will change B will have changed C is changing D has changed
You’d better give the task to _____ can finish it ahead of time.
| A．whomever | B．whoever | C．anyone | D．no matter who |