Bill was doing a lot of physical exercise to build up his_______.
| A．ability | B．force | C．strength | D．mind |
Great attention must to education, especially education in the countryside.
| A．pay | B．be paid | C．paid | D．be paying |
She agreed us, so we agreed the project at last.
| A．to; with | B．with; in | C．with; on | D．to; on |
--I am so happy that John now enjoys big parties.
---Really? He used to in front of strangers.
| A．to host; be shy | B．hosting; being shy |
| C．hosting; be shy | D．to host; being shy |
Jack is late again.It is of him to keep others waiting.
| A．normal | B．typical | C．common | D．ordinary |
If I ______ about this computer program, a hage amount of time and energy would have been saved.
| A．know | B．knew | C．had known | D．have known |