All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.
| A．in need | B．in place | C．in vain | D．in case |
___ ____ I passed the interview!
___ Good luck to you. next time!
| A．If only | B．Only if | C．If | D．When |
—Li Lin is very bright and studies hard as well.
—It’s no ______ he always gets the first place in any examination.
| A．question | B．doubt | C．problem | D．wonder |
I wonder ____ we can solve this hard problem.
| A．what else | B．how else | C．that | D．as if |
He is not _____ to pass the final exam.
| A．possibly | B．possible | C．porbably | D．likely |
We’ve just heard a _____ on the radio that a hurricane is _____ to come.
| A．warn; like | B．warning; likely | C．warned; able | D．warning; like |