A.Finding out | B.Found out | C.To find out | D.Find out |
A.Examing | B.Testing | C.Operating | D.Checking |
A.sending; which | B.to be sent; where |
C.being sent; which | D.being sent; where |
A.To compare with | B.Comparing to |
C.Comparing with | D.Compared to |
A.to pay off | B.to pay for | C.paid off | D.paid for |
A.Cooling | B.Having cooled | C.Being cooled | D.Cooled |
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