I didn’t understand ________led him to be late for three times every week.

A. what it was that         B. it was where that 

C. how it was that          D. why was it

It is immediately clear ____ the financial crisis will soon be over.

A. since       B. what          C. when         D. whether

.—I’ve got to go now.

—Must you ?I ______you could stay for dinner with us.

A. think                               B. thought

C. have thought                        D. am thinking

The medicine works more effectively_____you drink some hot water after taking it.

A. as    B. until    C. although     D. if

They’ve won their last three matches. ________I find a bit surprising 

A. that                                             B. when 

C. what                                            D. which 

The questionnaire takes ______ ten to fifteen minutes to complete and can be used along with the assessment interview.

A. mainly       B. punctually       C. approximately    D. precisely

When he  _______ the door, he found his keys were nowhere.                        

A. would open           B. opened                 C. had opened           D. was to open

The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

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

My parents don’t mind what job I do _____ I am happy.

A. even though       B. as soon as        C. as long as     D. as though

I felt so bad all day yesterday that I decided this morning I couldn’t face ________ day like that. 

A. other         B. another         C. the other         D. others