The task _____ more difficult than we expect.
| A．proved to | B．proved us | C．was proved | D．proved |
I don’t really work here; I ______ until the new secretary arrives.
| A．just help out | B．have just helped out |
| C．am just helping out | D．will just help out |
---Why hasn’t Jane arrived yet?
---She ______ again in the morning.
| A．shouldn’t have overslept |
| B．may have turned off the alarm clock |
| C．must have no one to call her |
| D．should have someone to wake her up |
---Could you ______ take care of my dog while I’m away?
---Sure. Leave it to me, please.
| A．perhaps | B．possibly | C．maybe | D．probably |
---Can Li Hua help me with my English?
---I regret to tell you her English is ______ yours.
| A．as good as | B．no more than | C．no better than | D．as much as |
In fact fuels we burn and plant food we eat ______ their chemical energy in the form of heat.
| A．give in | B．give off | C．give away | D．give up |