Nowdays, a large number of women, especially those from the countryside, __________ in the clothing industry．

is working

works

work

worked

Professor Smith, along with his assistants, __________ on the project day and night to meet the deadline．

work

working

is working

are working

All the employees except the manager __________ to work online at home．

encourages

encourage

is encouraged

are encouraged

The teacher, with 6 girls and 8 boys of her class, __________ visiting a museum when the earthquake struck．

was

were

had been

would be

New technology as well as new machines __________ been introduced in this company．

have

has

is having

having

Only when the war was over __________ to his hometown．

did the young soldier return

the young soldier returned

returned the young soldier

the young soldier did return

It was __________ back home after the experiment．

not until midnight did he go

until midnight that he didn’t go

not until midnight that he went

until midnight when he didn’t go

Why!I have nothing to explain．__________ you want me to say?

What is it that

What it is that

How is it that

How it is that

They __________ that they needed a larger office．

discussed

argued

quarreled

talked

In dealing with public relations, we should make every effort to prevent the __________ in personality．

contact

contract

connection

conflict