When I was walking past the window, I saw Ben______ my homework.
A.copying B.to copy C.was copying
—It’s very cold in this winter.I can’t stand it.
—Don’t worry.Spring is coming.The weather is getting ____.
A.warm B.warmer C.hotter
You are late, Lucy. The class ______ for 20 minutes.
A.has begun B.has been on C.began
—_______ do we brush our teeth at least a day?
—I think at least twice. It’s a good habit.
A.How soon B.How often C.How long
—I can’t find the book borrowed from the library now.
—So you should______ it.
A.return B.buy C.pay for
—Would you like to watch the robot show with me this Sunday?
—Sounds great. I believe ____will be difficult for robots in the future.
A.nothing B.everything C.something
