In the global economy，a new drug for cancer，________ it is discovered，will create many economic possibilities around the world.
| A．whatever | B．whoever |
| C．wherever | D．whichever |
We could have arrived earlier, but Tom insisted that I _________ too fast.
| A．mustn’t drive | B．couldn’t drive | C．not drive | D．not driving |
Two Chinese cargo ships, the Hua Ping and Yu Xing 8 were attacked by _____________ armed people on the Mekong River on Oct.5.
| A．unrecognized | B．unidentified | C．unfamiliar | D．unbelievable |
I __________ glasses since I was in primary school and I hate them. They make me look like a bookworm.
| A．have worn | B．have been wearing | C．have been worn | D．was wearing |
He is very popular among his students as he always tries to get them ________ in his lectures.
| A．interesting | B．interested | C．being interested | D．to interest |
He speaks English well indeed, but of course not ________ as a native speaker.
| A．as fluent | B．more fluent | C．so fluently | D．much fluently |