Many companies don’t realize ____ important the customers are, which is why they lose their customers unconsciously.
A.what B.whether C.how D.which
Don’t act before you have a second thought about the mission_____ you are unable to handle any potential emergency.
A.as long as B.so that C.even if D.in case
—Do you think he is the only person for the job?
—I’m not quite sure but he’ll prove_______ to the task.
A.equal B.essential
C.special D.superior
To learn English effectively, you should not only have a good command of the grammar, but understand the culture ____ it is spoken.
A.which B.when C.whom D.where
—The road ____ outside the school bothers the students a lot.
— Actually, we don’t know when it will be completed.
A.being built B.to be built C.to built D.built
Nowadays smart phones have_____. There is a growing need for them and many companies are trying to launch a new generation of it.
A.come about B.gone up C.checked out D.taken off
