_______ all the inventions have in common is _____they have succeeded.
A. What; what B. That; that C. What; that D That; what
I have reached a point in my life ______ I am supposed to make decisions of my own.
| A．which | B．where | C．how | D．why |
The doctor recommended that you swim after eating a large meal.
A wouldn't B couldn't C needn't D shouldn't
The good thing about children is that they _______ very easily to new environments.
| A．adapt | B．appeal | C．attach | D．apply |
It took ______ building supplies to construct these energy-saving houses. It took brains, too.
| A．other than | B．more than | C．rather than | D．less than |
Over the past decades, sea ice _____ in the Arctic as a result of global warming.
| A．had decreased | B．more than | C．attach | D．apply |