. ________, and the problem would be solved.
| A．A bit more effort | B．Having a little effort |
| C．If you have a bit more effort | D．There being a little effort |
Just after putting away the dishes, _______.
| A．the doorbell was rung | B．mother heard the doorbell ring |
| C．someone knocked at the door | D．the doorbell rang loud |
Don’t you think it ____ surprise that ____ German can’t speak ___ German language?
| A．/; the; / | B．a; a; the | C．/; a; the | D．a; a; / |
He made another wonderful discovery, ____ of great importance to science.
| A．which I think is | B．which I think it is | C．which I think it | D．I think which is |
-- _____! I’m practising my writing while you must bother me !
| A．Go ahead | B．You’ve got it | C．It’s your turn | D．Keep the noise down |
People in developed countries are supposed ____ more healthy food before than what they have today.
| A．to be had | B．to have | C．had | D．to have had |