With all his friends and money ________, he fell into great despair．

had gone

were gone

gone

going

________ for his expert advice, Holmes was able to help a great number of people with their personal affairs．

He was known

Well known

Having known

Been known

Over-heating development might have bad ________ on the national economy．

cause

influence

result

factor

See the flags on top of the building? That was ________ we did this morning．

when

which

where

what

________ the employees’ working efficiency, the supervisor will allow them to have a coffee break．

Improving

To improve

Having improved

Improved

Roller skating, now easy and fun, changed because of a man ________ Joseph Merlin．

naming

named

named in

with name

It shames me to say it, but I told a lie when ________ at the meeting by my boss．

questioning

having questioned

questioned

to be questioned

He looked around and caught a man ________ his hand into the pocket of a passenger．

put

to be putting

to put

putting

Having a trip abroad is certainly good for the old couple, but it remains ________ whether they will enjoy it．

to see

to be seen

seeing

seen

An awful accident ________, however, occur the other day．

does

did

has to

had to