While the soldier’s idea was interesting, the system was too difficult to be ____.
| A．of practical use | B．practical usefully |
| C．practice use | D．practice used |
No one is allowed ____ the room in the daytime..
| A．to be entered | B．to enter | C．entering | D．enter |
In the middle of the night, we ______signals for help from another ship.
| A．picked out | B．picked up | C．picked on | D．picked at |
Threehourswithyourgirlfriend_____tobeashorttime.
| A．seem | B．seems | C．isseeming | D．hasseemed |
One of the few things you __ _ say about English people with certainty is that they talk a lot about the weather.
| A．need | B．must | C．should | D．can |
Whenever I met him, ____ was fairly often, I like his sweet and hopeful smile.
| A．what | B．that | C．which | D．when |