_______ his help, we finished the work on time.
“The clouds became dark.” The sentence structure is ________.
Girls, I will tell you ________, and you can finish it ________.
—He doesn’t like making friends with other people, does he?—___. He always stays at home and never says anything about himself.
I find this Math problems very _____ _. I believe the students can work it out .
—I’m sorry, Mr Li. I ________ my exercise book at home.—Oh, don’t forget ________ it here tomorrow, please.