---I’m going to the States for further study.
---How long ____ you ___there?
| A．had , stayed | B．did, stay | C．have, stayed | D．are, staying |
相关试题
---- How did her family feel when you visited them?
---- My coming ________ the happiness of her family.
| A．added up to | B．added up | C．added | D．added to |
_________ to 100℃, water will boil.
| A．Being heated | B．Heated | C．Heating | D．To heat |
He __________ his aunt’s when he went to Wuhan on business.
| A．called on | B．called at | C．dropped in on | D．dropped in |
You’d better take something to read 
when you go to see the doctor __________ you have to wait.
| A．even if | B．as if | C．in case | D．in order that |
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