.
Thirty thousand yuan as well as hundreds of tons of food ______ to the flooded area.
| A．have offered | B．has offered | C．have been offered | D．has been offered |
It was not until he saw his mom _________.
| A．did the little child stop crying |
| B．that the little child stopped crying |
| C．the little child stopped crying |
| D．when the little child stopped crying |
John is very lazy. He falls ______ behind among the students.
| A．very | B．still | C．more | D．far |
The government must be very _____ about setting policies and make no decision until they are quite sure it is the right one.
| A．particular | B．concerned | C．cautious | D．certain |
I don’t understand how he can say that everything is fine _____ it’s so obvious that it’s not.
| A．unless | B． in case | C．so that | D．when |
Please remember to _____ a stamp _____ your envelope before you post it to your friend.
| A．attach; to | B．fasten; to | C．tie; to | D．stick; by |