I sent ______ e-mail to Amy to say thanks for her help with my study.
| A．a | B．/ | C．an | D．the |
A dog robot could help ____ the room.
| A．cleaning | B．getting | C．clean | D．get |
—Where is Miss Wang?
—She went to Hainan Island last week and will return _________ six days.
| A．ago | B．later | C．behind | D．in |
There will be ____ cars and ____ pollution twenty years later.
| A．many, few | B．little, few |
| C．less, more | D．fewer, less |
—What is a resolution？—It’s
| A．a promise | B．an action |
| C．a message | D．a letter |
My grandfather me a postcard from New York last week.
| A．gave | B．sent | C．passed | D．borrowed |