）The red bike _______be Hu’s. She has a blue bike.
| A．must | B．might | C．can | D．can’t |
The work is ___difficult for the boy to do. Please give him some help.
| A．too | B．of | C．at | D．By |
—How do you study English? —I study by ___ more.
| A．speak | B．speaking | C．telling | D．Talking |
–Do you know __________tomorrow? --At 8 o’clock.
| A．when did Sally come | B．when Sally came |
| C．when will Sally come | D．when Sally will come |
--How clean and tidy your bedroom is! --Thanks. It ______ every day.
| A．cleans | B．cleaned |
| C．is cleaned | D．was cleaned |
I _______ you if I find my uncle’s phone number.
| A．tell | B．told | C．will tell | D．have told |