It’s very funny that many people who lose weight gain it back after some time and end up back __________ they started.
A．when B．after C．since D．where
The government officials met the workers and engineers working on the stadium, most _________ being migrant workers.
A．of them B．of what C．of whom D．of which
Our special thanks go to thousands of volunteers, without ________tireless work, none of this would be possible．
A．whose B．which C．whom D．that
If there hadn’t been so much smog in Beijing, we______________ the beautiful scenery across the Tiananmen Square.
A．enjoyed B．would have enjoyed C．had enjoyed D．would enjoy
No worker and no engineer who it is that is for the explosion of the chemical factory.
A．know; to blame B．would know; blamed
C．know; to be blamed D．knows; to blame
_____we promise continuous increase in rural incomes _____improve the whole people's well-being．
A．Only if; we can B．If only; can we C．Only if; can we D．Unless; we can
