About fifty percent of the students in our class ______ from poor families.

1.   ?    is
2.   ?    are

One-third of the population here ______ increased its income in the past three years.

1.   ?    has
2.   ?    have
3.   ?    has been
4.   ?    have been

Bread and butter ______ their daily food.

1.   ?    is
2.   ?    are

Great quantities of fish ______ in this river in the past few years.

1.   ?    is caught
2.   ?    has been caught
3.   ?    are caught
4.   ?    have been caught

Why she didn't come today _______ quite clear.

1.   ?    isn't
2.   ?    aren't
3.   ?    don't
4.   ?    doesn't

When and where to build the school __________ yet.

1.   ?    has not been decided
2.   ?    have not been decided
3.   ?    has not decided
4.   ?    have not decided

What we need ________ bicycles.

1.   ?    are
2.   ?    is

What he says and what he does ____________.

1.   ?    do not agree
2.   ?    does not agree

He as well as his brothers _______ font of sports.

1.   ?    are
2.   ?    is
3.   ?    has
4.   ?    have

Five times six ______ thirty.

1.   ?    is
2.   ?    are