I think the talk given by the old scientist is ______ worth ______.
| A．very, to listen | B．well, listening | C．very, to listen to | D．well, listening to |
This is an illness that can result in total blindness ____left untreated.
A after B if C since D unless
Mum wrote to me every week ,_____she was too busy with her teaching work .
A if B even C unless D when
____ is always right.
A No matter what you say B Whatever you say
C No matter how you say D However you say
The machine can only do _____man asks it to do .
A how B after C what D when
________the day went on ,the weather get worse .
A With B Since C While D As