Onceenvironmentaldamage________,ittakeslongtimefortheecosystem(生态系统)torecover.
A. help
B. istodo
C. hasdone
D. isdone
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Michelle’sfather,aswellashermother,________inNewYorkforafewmoredays.
A. suggesthertostay
B. suggestshemuststaysuggesthertostay
C. suggestherstaying
D. suggestsshestay
Hewon'tattendthebreakfastmeetingforfarthatit________(last)formorethantwohours.
Whenhetunedthecorner,hefoundhimself________(follow)byamaninblack.
He might not cheat you in the deal if you ____________ (see through) this time.