You should ____________ your hands if you want to ask teachers for help.
There are some dangerous fishes in this river, and I’ve warned Jack here.
Chinese students often give small gifts or cards to their teachers on Teachers’ day to let them know _____. A.how great they are B.how great are they C.what great they are
Tom found _____ difficult to learn chemistry well. A.it B.that C its
Our English teacher said _____ English well was very important. A.learn B.learning C.learned
—Don’t throw stones at the animals in the zoo.—_____. A.No, I won’t. B.Yes, I will. C.Yes, I do.