--- Hi, Grandma, why do you look so tired?
--- I’m tired. I _______ the cleaning all morning.
| A．did | B．had done | C．have been doing | D．have done |
相关试题
I’m sure that your letter will get _______attention. They know you’re waiting for it.
| A．continued | B．immediate | C．careful | D．General |
As the visiting prime minister puts it, China’s influence in the world will continue to strengthen______ its economy grows.
| A．although | B．until | C．as | D．Before |
Knowing the meaning of a word is one thing; yet using it both grammatically and communicatively properly is quite ______.
| A．much | B．another | C．little | D．many |
After staying in hospital for long, the patient was advised to go to the sea
side to____ his health.
| A．take up | B．hold up | C．make up | D．pick up |
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