Is this the reason ______ at the meeting for his carelessness in his work?
| A．What he explained | B．how he explained |
| C．he explained | D．why he explained |
The host stood at the door and every guest a welcome.
| A．nodded | B．dropped off | C．shook | D．moved |
It to look after these naughty grandchildren of mine for a whole day.
| A．put me down | B．drove me out | C．wore me out | D．pulled me through |
. We can’t wait. We have to the direction and the distance before we take action.
| A．make out | B．figure out | C．think out | D．turn out |
We want our children to know that hard work .
| A．comes off | B．gives off | C．pays off | D．sees off |
. Teaching a pronunciation class to a mixed group of learners can a teacher with many challenging problems.
| A．provide | B．produce | C．present | D．offer |