We should ________ ‘Thank you’ when we borrow something from someone.
| A．tell | B．speak | C．say | D．Talk |
There are some dangerous fishes in this river, and I’ve warned Jack here.
| A．not to swim | B．to not swim |
| C．swim not to | D．to swim not |
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.