Try harder.... you will lose everything you have.
A.provided that
B.supposing that
C.if
D.unless

We will be holding a meeting this afternoon to decide _________ needs to be revised before the report goes to print.
A.what
B.those
C.whether
D.there

For those who have made an investment, _________ happens during the first year is an important indicator of how successful the company will be.
A.that
B.as
C.what
D.how

.... he arrives soon, we will have to start the conference without him.
A.Suppose
B.Provided
C.Unless
D.If

.... more carefully, he would not have had the accident yesterday.
A.If Peter drove
B.Had Peter driven
C.Only if Peter could drive
D.Unless Peter had driven

I would have crashed the car.... .
A.unless you warned me
B.in case you warn me
C.if there were a warning
D.but for your warning

When questioned as to ______ he was planning to work for the competition, Mr. Graham said he would always be loyal to Sanford and Sons
A.whenever
B.while
C.whether
D.whereas

We want all staff to be aware _________ the policy will be changed on the following Monday.
A.concerning
B.of
C.that
D.which

Please remember __________ the vacation policy has been changed this year.
A.that
B.when
C.if
D.what

A key to closing a deal is to realize ________ knowing how to negotiate means having a sense of how people think and feel.
A.so that
B.in that
C.and that
D.that