At this time tomorrow, two of my good friends ________ over the Yellow Sea to visit Korea．

will be flying

are going to fly

will fly

are to fly

We will use the ________ plan in case anything unexpected happens．

active

alternative

effective

economic

Look out! Don’t get close to the house ________ the roof is under repair．

which

whose

of which

that

Over 500 people are reported ________ by the recent hurricanes and tornadoes in America．

killed

to have been killed

being killed

had killed

A local radio station said that several eruptions ________ in the past twenty years．

take place

took place

have taken place

had taken place

We tell them that the problem put forward yesterday ________ now．

is being talked

is talked about

is being talked about

has been talked

Some children receive a good education ________ others never go to school at all．

while

when

although

however

Our class basket ball team ________ a good one and whenever in trouble, the team always ________ each other．

are; helps

is; help

are; help

is; helps

Without the contribution of Qian Xuesen, China ________ such great achievements in space technology．

wouldn’t make

can’t make

shouldn’t have made

wouldn’t have made

The Expo 2010 organizer will stop ticket sales and exchange service on the last two days of the world fair, ________ October 30 and 31．

possibly

namely

accordingly

mainly