Mother's Day is coming. I'm thinking about ________ to make my mother happy.
A.when to do B.what to do
C.where to do D.which to do
I heard that we can use WeChat to pay for things now. Can you show me ________ it?
A.how to use B.whether to use
C.when to use D.what to use
—The light in Bill's office is still on. I wonder
________.
—Maybe at midnight again.
A.if he will work with me
B.why he works so hard
C.how he works it out
D.when he will stop working
—Excuse me, could you tell me ________？
—Well, there's one on the corner of the road. Walk along the road, and you will see it.
A.where the bank was
B.where the bank is
C.what the bank is
D.what the bank was
Helen, I'm not sure ________ living in the countryside. How about this Sunday?
A.when we will visit our granny
B.when we visited our granny
C.why we will visit our granny
D.why we visited our granny
Mom, have you seen my toy bear？I don't know ________.
A.why I got it B.when I got it
C.how I lost it D.where I lost it
