Take action today ______ you won’t miss your windows of opportunity.
| A．as if | B．now that | C．so that | D．even if |
There were so many cars held up by the heavy rain on the road that we had no but to wait.
| A．alternative | B．difference | C．relation | D．opposition |
that we can’t get the necessary equipment , we will have to give up the experiment.
| A．If | B．Supposed | C．Provide | D．Assuming |
_____professional development, big cities appeal to many young people ．
| A．In favour of | B．In terms of |
| C．In need of | D．In honour of |
Only when the European countries' financial system broke down _____to take measures to deal with those problems．
| A．did they decide | B．they decided | C．they had decided | D．had they decided |
He, an average citizen, always thinks of_____ he can do more for the people．
| A．how | B．why | C．what | D．which |