_______ let fake products become uncontrolled in the market.
| A．In certain circumstances we can |
| B．In no circumstance can we |
| C．Under any circumstances we can |
| D．Under no circumstances can we |
— Shall we make it next Saturday morning?
— Sorry. I _______ a friend off at the airport then.
| A．see | B．was seeing |
| C．will have seen | D．will be seeing |
Many memories of old times were _______ by the conversation we had that evening.
| A．called up | B．set up |
| C．kept up | D．put up |
— Tony, you seem in high spirits.
— Yes. There is nothing _______ exciting than seeing my work in print.
| A．so | B．most |
| C．more | D．as |
He talks as if he knew the truth. _______, he knows nothing about it.
| A．Actually | B．Really |
| C．Obviously | D．Generally |
The sentence wants _______ once more as many students still have difficulty understanding it.
| A．to explain | B．explaining |
| C．being explained | D．explained |