I like all the subjects ______ Maths.
While we________about Mr.Wang in the classroom,he came in.
I was doing my homework________my father was reading newspapers.A.howB.whileC.if
—I was at the cinema at 9 o’clock last night.What about you?—I________at home.
—Do you know________?—This afternoon.
We were________surprised that nobody believed that it was true.