Sam ______ coins since he was eleven years old, and now he has hundreds of them.
| A．collected | B．had collected |
| C．has been collecting | D．had been collecting |
I had a really hard time _____studying science this term.
| A．to | B．with | C．in | D．on |
Don’t ______ others when they make mistakes.
| A．laugh at | B．laugh with | C．laugh to | D．laugh |
---It’s Tom’s birthday next Sunday. What should I get for him?
----______________
| A．What about a bicycle? | B．Good idea. | C．Great | D．Yes, |
Frank _____ to see his grandma if he _____ free tomorrow.
| A．will come ; will be | B．comes ; is | C．will come ; is | D．is; come |