The expert offered us another piece of advice,_____of great help to our program. A.I think it isB.I think which isC.which I think it isD.which I think is
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Last summer we visited the West Lake, ______Hangzhou is famo..
Last summer we visited the West Lake, ______Hangzhou is famous in the world. A.for which B.for that C.in which D.what
__ has been mentioned above, continued chairman after he too..
__ has been mentioned above, continued chairman after he took a sip of coffee, ____ the project must be carried out before spring flood comes.A.As; thatB.That; whichC.This; whichD.It; that