[ Grammar ]
Present Perfect Continuous: The company (work) on its new product line for the past few months.
A. have been working
B. has been working
C. had been working
Select your answer:
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Grammar › ViewWho _____ the answer to the question?
A. does know
B. know
C. does knows
D. knows
Modals Auxiliary › View
It ……….. rain soon, so you had better bring your umbrella.
A. should
B. will
C. must
D. ought to
E. has to