I think the most helpful invention is light bulb. It seeing in the dark, and it gives people more time to work and play every day.A. used to B. is used to C. is used for
Excuse me, could you tell me ________? A. where are they B. how did they go there C. when they will come back
In order to keep our students safe, strangers ________before entering the school yard. A. will check B. will be checked C. checked
—It’s cold today. You’d better ________ your sweater. —OK, I will. A. put on B. turn on C. get on
Lily, can you speak more loudly? I can ________hear you. A. almost B. hardly C. nearly
—Peter, I haven’t seen you for a long time. —Oh, I _______ a book these days. A. am writingB. have writtenC. wrote