–Listen! Helen is singing in the next room.
-- It be Helen. She has gone to Guangzhou.
| A．would | B．can’t |
| C．could | D．might |
---Is the notebook Carla’s?---It _____be hers. It has Mary’s name on the cover.
| A．could | B．might | C．must | D．can’t |
Baby giant pandas ________ a lot of time ________ their mothers’milk every day．
| A．spend；to drink | B．cost；drinking |
| C．take；to drink | D．spend；drinking |
Excuse me. I _______ I was blocking(挡) your way.
| A．didn't realize | B．don't realize |
| C．haven't realized | D．wasn't realizing |
Her shoes are _________ mine.
| A．as newer as | B．so new as |
| C．as new as | D．so newer as |
—When did your school hold the sports meet?
—Last week. And I _______ the girls’ 400-metre race.
| A．joined | B．took part in |
| C．will join | D．will take part in |