________ is of no concern to us.

A．It rain or not                           B．If or not it rains

C．Whether it rains or not                   D．Will it rain or not

To improve the quality of our products, we asked for suggestions        had used the products.

A．whoever          B．who              C．whichever         D．which

It never occurred to me _____ you could succeed in persuading him to change his mind.

A．which            B．what             C．that              D．if

—Have you finished the book？

—No. I’ve read up to _____ the children discover the secret cave.

A．which            B．what             C．that              D．where

The doctor thought ____ would be good for you to have a holiday.

A．this              B．that              C．one              D．it

The          looks on the children’s faces suggested that the question was really       .

A．Confused; confusing                     B．Confused; confused

C．Confusing; confused                     D．Confusing; confusing

Alexander tried to get his work _______in the medical circles.

A．to recognize       B．recognizing        C．recognize         D．recognized

At the crossing there is an arrow _______the direction to the Andrew farm.

A．indicating         B．to indicate         C．indicated          D． dictating

After the new type of rice was introduced, the farmers produced _______ rice this year as last year.

A．as twice much as                        B．twice as much as

C．twice much as                          D．twice as much

The number of students in our school _________ by 5 % every year.

A．rise              B．rises             C．raises            D．raise