The successful launch of Tiangong-1 on September 29^th indicates that the space workers' efforts did in fact __________ once again．

show off

run off

pay off

take off

Most of the reporters invited to the World Economic Forum in Dalian stayed in the flats in this building, each __________ solar heaters．

was equipped with

equipped with

is equipped by

equipped by

The fact showed that the voyages of travelers before the 17^th century were not __________ the sea even though they didn't have modern navigational aids．

at the expense of

at the risk of

in the way of

at the mercy of

__________ I admire David as a poet, I don't like him as a man．

Much as

Only if

If only

As much

In reality ,not only an enormous amount of strength and fitness but also determination __________ required to perform these activities that __________ seem childish and cause laughter rather than respect．

are; could

are; can

is; must

is; might

On September 22, 2011 Yemeni rebels advanced into the capital, __________ the situation may tend to get even worse．

of which

whose

that

in which

Whether you believe it or not, it is __________ that caused your heart attack．

because of your overweight

because you are overweight

your being overweight

you are overweight

__________ by the teacher, he couldn't laugh when seeing my funny acts．

Criticize

Criticized

Being criticized

Having criticized

I think it is too late for you to take your studies __________ until you finish your university here．

strictly

truly

carefully

seriously

Tom is __________ younger of the two newcomers．To be honest, I have never seen __________ cleverer one．

不填；不填

the; a

a; the

不填; a