| A．bought, for | B．had, for | C．bought, since | D．had, since |
| A．is, did, go | B．went, is, going | C．has gone, did, go | D．is going, does, go |
| A．have stayed, went, were | B．had stayed, go, are |
| C．have stayed, go, have been | D．had stayed, went, were |
| A．meet | B．have met | C．met | D．had met |
| A．didn’t see, did go | B．didn’t see, have gone |
| C．haven’t seen, have been | D．haven’t seen, have gone |
| A．already | B．never | C．ever | D．still |
| A．has been | B．is | C．was | D．had been |
| A．got to know | B．have got to know | C．have known | D．knew |
| A．finished | B．will finish | C．has finished | D．finish |
| A．buys | B．had bought | C．has bought | D．bought |
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