— How about buying an iPhone 4s for your mother’s birthday?
— Oh, maybe it’s too expensive, Dad. Do you know _______?
| A．how much does it cost | B．how much it costs |
| C．how much it cost | D．how much did it cost |
The mobile phone has influenced our life a lot since it_____.
A. inventsB. is invented C. was invented
Don’t get off the bus it has stopped.
A. until B. if C. though
Which of the following signs shows “For the disabled to go through”?
"Whose notebook is this?" "It ____ Jim's. It has his name on it."
A. can't be B. can be C. must be
Mr. Yang wrote a_________story. Most of us enjoyed it a lot.
A. two-thousand-words
B. two-thousand-word
C. two-thousands-word