Before her first Harry Potter came out in 1997，J.K.Rowling ________ English for a living in Portugal.
| A．is teaching | B．had taught |
| C．has taught | D．would teach |
Body language can a lot about your mood, so standing with your arms folded can send out a signal that you are being defensive.
| A．take away | B．throw away |
| C．put away | D．give away |
If you swim in a river or lake, be sure to investigate is below the water surface. Often there are rocks or branched hidden in the water.
| A．what | B．who | C．that | D．whoever |
Studies have shown that the right and left ear sound differently.
| A．produce | B．pronounce |
| C．process | D．download |
It was so noisy that we hear ourselves speak.
| A．couldn’t | B．shouldn’t |
| C．mustn’t | D．needn’t |
Have you ever heard of the trees that are homesanimals both on land and sea?
| A． | about | B． | to | C． | with | D． | over |