Jack wasn’t saying anything, but the teacher smiled at him ________he had done something very clever.
A.as if B.in case
C.while D.though
a strange plant! I've never seen it before.
A.Which B.What C.How D.Whether
One Friday, we were packing to leave for a weekend away ________ my daughter heard cries for help.
A.after B.while C.since D.when
Modern science has given evidence _________ smoking can lead to many diseases.
A.what B.which
C.that D.where
I’m afraid he’s more of a talker than a doer, which is ________he never finishes anything.
A.that B.when
C.where D.why
You'll find taxis waiting at the bus station ________ you can hire to reach your host family.
A.which B.where
C.when D.as
