He bought some books, ______ were expensive.
| A．most of which | B．the most of which |
| C．most | D．the most of that |
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 |
__________ the adventure film will be shown in the cinema depends on the manager.
| A．What |
| B．Whether |
| C．If |
| D．Where |