Let those in need ________ that we will go all out to help them.
| A．to understand | B．understand |
| C．understanding | D．understood |
When the time came to make the final decision for a course，I decided to apply for the one that ______my interest．（ ）
| A． |
limited |
B． |
reserved |
C． |
reflected |
D． |
spoiled |
A sudden stop can be a very frightening experience，______ if you are travelling at high speed．（ ）
| A． |
eventually |
B． |
strangely |
C． |
merely |
D． |
especially |
When their children lived far away from them，these old people felt ______from the world．（ ）
| A． |
carried away |
B． |
broken down |
| C． |
cut off |
D． |
brought up |
Scientists have advanced many theories about why human beings cry tears，none of ______ has been proved．（ ）
| A． |
whom |
B． |
which |
C． |
what |
D． |
that |
To return to the problem of water pollution，I'd like you to look at a study _______ in Australia in 2012．（ ）
| A． |
having conducted |
B． |
to be conducted |
| C． |
conducting |
D． |
conducted |