Some insects ______ the color of their surroundings to protect themselves.
| A．take in | B．take off | C．take on | D．take out |
I must be off now. My friends ________ outside.
| A．wait | B．have waited | C．are waiting | D．were waiting |
David is a great teammate. He knows well how to work with __________.
| A．both | B．other | C．another | D．others |
I was about to walk over to Tom’s seat when he ____ and left.
| A．got up | B．tuned up | C．kept up | D．came up |
Please do not feed the fish; they _____ die if they eat too much.
| A．shall | B．must | C．need | D．may |
The 16th Asian Games started _______ November 12th, 2010 in Guangzhou.
| A．at | B．on | C．in | D．by |