---I met your boss in the street this morning.
---Ah? You _____ be joking. He flew to Europe yesterday!
| A．must | B．should | C．could | D．might |
your father usually go to work by car?
A. Do B. Is C. Does
-- are you staying in the countryside?---For more than one week.
A. How often B. How long C. How much
---What’s the matter? --- I have .
A. an apple B. a sore back C. many friends
A lot of vegetables help us to keep in good .
A. habit B. health C.body
Jack eats meat once twice a month.
A. or B. and C. but