--- Please hand in your homework at once.
--- . I left it at home.
A. Thank you.
B. It’s hard to say.
C. Oh, my goodness.
Mary _________ as a volunteer teacher for 10 years.
| A．works | B．will work | C．worked | D．has worked |
— Is Mike at home?
— No. He ________ with his friends now.
| A．swims | B．is swimming | C．swam | D．will swim |
I will tell you the good news as soon as you _______ back.
| A．come | B．came | C．are coming | D．will come |
My grandma ______ dinner when I got home yesterday.
| A．cooks | B．will cook | C．is cooking | D．was cooking |
David enjoys _________ basketball on the playground after school every day.
| A．play | B．played | C．playing | D．to play |