I can't to London，because the lines are always busy．
A．get out B．get through C．go through D．get along
Though they are not sure of the long-term ，all the scientists agree to start the research immediately．
A．affect B．result C．effect D．effort
We gave them a lot of help in the of money．
A．type B．kind C．form D．way
many times，he still doesn't know how to do it．
A．Being told B．He has been told
C．Having told D．Having been told
It was cruel the father to have his son standing outside in the rain all the afternoon．
A．of B．for C．to D．on
The oil in your car ．You'd better drive to the gas station and fill it up．
A．has run out B．is running out
C．is using up D．has been run out of
