—Your little brother is watering the flowers! Why?
—Well, I’m not feeling very well today—otherwise I ______ it myself.
A.did B.would be doing C.had done D.would have done
—Why didn’t you attend the meeting yesterday?
—Well I ______ anything about that.
A.didn't tell B.haven't told C.hadn't been told D.haven't been told
Daniel has undertaken to keep the secret, so he won’t tell anyone even though ______.
A.asked to keep B.to be asked C.to ask D.asked to
There have been widely differing ______ in the newspapers about the explosion of the chemical works.
A.revisions B.versions C.dimensions D.editions
—Mr. Robert, I’d like to take a gap year to volunteer for a global anti-Aids campaign.
—That’s great, ______ you can afford the time.
A.provided that B.in case C.even if D.so that
In order for the experiment to be valid, it is ______ to record the data accurately.
A.essential B.confidential C.potential D.definite
