By the time he was twelve he ______ a chemistry lab of his own.
| A．built | B．has built | C．had built | D．was building |
This is the person __________ I borrowed some money.
| A．who | B．from whom | C．from who | D．from which |
This is the museum _____ we visited last year.
| A．where | B．that | C．what | D．who |
I caught a bad cold last month and it took a whole week for me to ________ from it.
| A．gain | B．recover | C．treat | D．cure |
The magazine is _____ reading, so he advised me _____ it.
| A．worthy; to buy | B．worthy; buying | C．worth; to buy | D．worth; buy |
Both of my parents insist ______ a computer for me, but I don’t think it is necessary.
| A．to buy | B．on buying | C．buying | D．in buying |