It is so hot today． Why not swim in the river？
No， we can't swim in the river． Our teachers and parents always warn us ________in the river． It's too dangerous．（ ）
A．to not swimB．swimming
C．not to swimD．not swimming
They have to do a lot of work, ________ they?
| A．haven't | B．do |
| C．don't | D．have |
（）---Are you confident about the basketball match against Class 9, Yangyang?
----_________ I’ve got everything ready!
| A．Of course not. | B．It’s hard to say. |
| C．Sure, I am. | D．I am afraid not. |
---- ______will Mrs. Lin go to Canada?
---- To see her daughter there.
| A．How | B．When |
| C．Why | D．What |
-- _______is it from here to the station?
-- It’s ten minutes’ ride.
| A．How long | B．How far |
| C．How much | D．How many |
--________ does your father visit your grandparents a week? –Once.
| A．How often | B．How many times |
| C．How long | D．How soon |