_____ the flight to Beijing will be delayed is _______ I’m especially worried about.
A.If; what | B.Whether; that | C.When; that | D.Whether; what |
A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.
A.is | B.are | C.was | D.Were |
Generally, there may be several different ______ to the same issue.
A.methods | B.means | C.approaches | D.ways |
We can give you a lift to the airport _______ you don’t mind the crowdedness, for there have already been four of us in the car.
A.unless | B.though | C.provided | D.until |
Being a teacher, you must observe your behavior, for ________ you say and do has a life-long effect on your students.
A.that | B.which | C.what | D.as |
He made another wonderful discovery, _______ of great importance to science.
A.which I think is | B.which I think it |
C.which I think it is | D.I think which is |