It is reported that ________ European chemist called Felix Hoffmann first produced ASA which completely changed ________ man’s understanding of aspirin.
| A．a; / | B．an; a | C．the; a | D．an; / |
It was the A/N1H1 epidemic ____ spread almost throughout the country ____ promoted the research and production of the flu vaccine.
| A．that…that | B．that…which | C．what…that | D．that…what |
The traffic in Shanghai will be blocked and people will come to blows _____ the government plans in advance.
| A．as long as | B．unless | C．even if | D．since |
— Where’s your assignment?
— ____
| A．I had already handed it in. | B．It was handed in. |
| C．It’d been handed in. | D．It’s been handed in. |
The customers objected ____ unfairly in the course of shopping.
| A．to be treated | B．their being treated |
| C．to being treated | D．having been treated |
A major issue was put forward by some representatives at the conference ____ the teachers in the remote areas were underpaid.
| A．whether | B．at which | C．where | D．that |