Modern science and technology has _____ communication between people far apart.
| A．made convenient | B．made it convenient | C．made it convenient for | D．made it convenient to |
—Have you been to the Great Wall?
—Perhaps not in my memory; ____, it might have been during the early childhood.
| A．if any | B．if so |
| C．if ever | D．if not |
It was reported that a little boy under a destroyed house for three days was pulled out alive at last.
| A．trapped | B．being trapped |
| C．was trapped | D．had been trapped |
The room___ 10 meters across is large enough for a single man to live in.
| A．being measured | B．to be measured |
| C．measures | D．measuring |
He is a strict and kind teacher, ______ my son loves and respects.
| A．one | B．the one who |
| C．which | D．he who |
Helping others is a habit, ___ you can learn even at an early age.
| A．it | B．that |
| C．what | D．one |