.
Science and engineering students often _____ their heads in books instead of going to dances and cinema.
| A．bury | B．hide | C．devote | D．cover |
So clearly English that he can always make himself understood.
| A．he speaks | B．he spoke | C．did he speak | D．does he speak |
Some research workers completely all those facts as though they never existed.
| A．refuse | B．miss | C．leave | D．ignore |
some of the beer here— perhaps you will enjoy it.
| A．Try | B．Trying | C．To try | D．Have tried |
We’ ll need to apply all our to this job, for it is very important to us all.
| A．power | B．energy | C．force | D．strength |
—Shall we finish the project two days ahead?
—I’m afraid we , in case the heavy storm comes suddenly.
| A．may | B．will | C．can | D．must |