He didn’t make____clear when and where the meeting would be held.
| A．this | B．that | C．it | D．these |
The reason ________ he explained was________ he was ill and unable to go to school.
| A．why; that | B．why; because | C．which; because | D．which; that |
The children were left ________of a neighbor when they were on holiday.
| A．in charge | B．in the charge | C．under charge | D．at charge |
---We got here Tuesday afternoon.
---__________Why didn’t you call us earlier?
| A．Good luck. | B．You did? | C．It’s no surprise | D．Go ahead. |
Ordinary woman though she is, she had won the award because she tries every means to make people _________ of the importance of the environment conservation.
| A．aware | B．careful | C．sensible | D．awesome |
It has been announced that all the candidates______ remain in their seats until all the papers have been collected.
| A．can | B．will | C．shall | D．should |