【原创】 Vehicles, coal-burning, airborne dust and industrial production ______85 to 90 percent of the major airborne pollution sources in most Chinese cities, the newest research shows.
| A．account for | B．call for |
| C．make up for | D．provide for |
You may rely on _______ that she is sure to attend the concert.
| A．her |
| B．herself |
| C．it |
| D．this |
Tom often gets high marks. He is one of the students who _______ great importance to _______ homework
| A．attach, do |
| B．attach, doing |
| C．attaches, do |
| D．attaches, doing |
Everybody at the scene was shocked when the fierce shark _______.
| A．bit Tom’s leg |
| B．bit by Tom’s leg |
| C．bit Tom by his leg |
| D．bit Tom by the leg |
--- Tony, may I borrow your car this afternoon?
--- Sorry. _______.
| A．It’s repaired |
| B．It has been repaired |
| C．It’s being repaired |
| D．It had been repaired |
_______ seems that most endangered species of wildlife are under protection.
| A．There |
| B．This |
| C．What |
| D．It |