Some so-called climate travelers ________ in one place for a few months and then move on to some other places as the weather changes.
| A．have stayed | B．are staying |
| C．stay | D．stayed |
It is none of your business __________ other people think about you. Believe yourself.
| A．how | B．what |
| C．which | D．when |
You can only be sure of __________ you have at present; you cannot be sure of something __________ you might get in the future.
| A．that; what | B．what; / |
| C．which; that | D．/; that |
A warm thought suddenly came to me __________ I might use the pocket money to buy some flowers for my mother’s birthday.
| A．if | B．when |
| C．that | D．which |
These shoes look very good. I wonder __________.
| A．how much cost they are | B．how much do they cost |
| C．how much they cost | D．how much are they cost |
—What did your parents think about your decision?
—They always let me do __________I think I should.
| A．when | B．that |
| C．how | D．what |