Sally has been swimming ______ four hours.
A. for about B. since C. about D. /
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
