It was not until dark _____he found _____he thought was the correct way to solve the problem.
| A．that; what | B．that ; that | C．when; that | D．when ;what |
The difficulty solving such a problem ten years ago was twice greater than________is today.
| A．it | B．that | C．as | D．what |
--- Damn! I________more to avoid that !
--- Don’t cry over spilt milk. Besides, it wasn’t your fault.
| A．could do | B．should do | C．might have done | D．would do |
These monkeys are such quick thieves that they________your bananas when you realize what has happened.
| A．will enjoy | B．are enjoying | C．have been enjoying | D．will be enjoying |
As the________of Thomas Edison shows, a child who typically questions the most common facts may turn out a genius as a grown – up.
| A．case | B．situation | C．condition | D．way |
It was your lie about your education background______cost you the opportunity to get the job.
| A．which | B．it | C．that | D．and |