----- In recent years,___ problem of global warning has been very serious.
------That’s right. People are facing ____ number of natural disasters now.
| A．不填; | B．a; the | C．the; a | D．a; a |
His parents ________ his money, so he is in trouble now.
| A．cut off | B．cut through | C．gave up | D．brought down |
Bows and arrows have _______ been out of use.
| A．long after | B．long before | C．before long | D．long since |
A library with five thousand books ________ to the nation as a gift.
| A．is offered | B．has offered | C．are offered | D．have offered |
The children are always _____ to set off ______ the seaside.
| A．excited, to | B．exciting, to | C．excited, for | D．exciting, for |
They have ________ the rent _______ 12 dollars.
| A．to fix, for | B．to fix, by | C．fixed, at | D．fixed, for |