This blue car ____________ be Bob’s bcause his car is black.
| A．can’t | B．must | C．could | D．would |
My uncle is an experienced teacher. He_____English since 2002.
| A．teaches | B．taught |
| C．has taught | D．will teach |
Mr. Green _______ his lessons when I went into his office.
| A．prepares | B．prepared |
| C．is preparing | D．was preparing |
—Tom, What did you do last Sunday morning ?
— I _______ my grandma with my parents .
| A．visited | B．visit |
| C．will visit | D．have visited |
Ourteacher usually gets to school a little _______ than our students.
| A．early | B．earlier |
| C．earliest | D．the earliest |
We are often told_______ water in our daily life.
| A．save | B．saving |
| C．to save | D．saves |