— How long do you suppose it is ______ he arrived here？
— No more than half a week.
| A．when | B．before | C．after | D．since |
The speaker told a joke or story __________ when he gave the talk to keep us interested.
| A．here and there |
| B．sooner or later |
| C．more or less |
| D．now and then |
He is very popular among his students as he always tries to make them __________ in his lectures.
| A．interested |
| B．interesting |
| C．interest |
| D．to interest |
To their great relief, the missing child returned home,__________ after an absence of two weeks.
| A．felt tired and sound |
| B．tiring and soundly |
| C．felling tired and soundly |
| D．tired and sound |
The first textbook written for teaching English as a foreign language __________ in the 16th century.
| A．came about |
| B．came across |
| C．came out |
| D．came over |
He was busy writing the story all the morning, pausing __________ to search for the right word.
| A．occasionally |
| B．eventually |
| C．urgently |
| D．conveniently |