She’s aiming ______a sholarship; That is why she has been focusing her minds_____her work..
| A．at; on | B．to; on | C．for ; in | D．at; into |
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 |
Jane’s grandmother had wanted to writechildren’s book for many years, but one thing or another always got in way.
| A．a;不填 | B．the;the | C．不填;the | D．a;the |