“What courses are you going to do next semester”
“I don ’t know. But it’s about time _____ on something.”
A、I’ddecideB
暂无解析
Modern____perhapscausesmoreproblemsthanitsolves.
_____enoughtimeandmoney,theresearcherswouldhavebeenabletodiscovermoreinthisfield.
It’s high time we _____ cutting down the rainforests.
Hesetupinbusiness____hisownandwasverysuccessful.
Even if his letter（） tomorrow ，it（） too late to do anything.
