To my delight, the students are recycling many things they ______ away in the past.
| A．were throwing | B．will be throwing |
| C．had thrown | D．would have thrown |
相关试题
House prices keep rising these days. A flat in our city costs ____ now as in 1990.
| A．as three times much | B．as much three times |
| C．much as three times | D．three times as much |
Make sure that the machine is kept where it is not ____ to children.
| A．possible | B．common | C．accessible | D．Useful |
Mary is the only one of the students in our class who ____ to the Great Wall so far.
| A．is | B．has been | C．are | D．had been |
Two years ago, the 9-year-old girl set up ___ organization named Angel to help ____ homeless.
| A．the; | B．; the | C．an; a | D．an; the |
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