Many students are ________ chatting online, which wastes them plenty of time.
A.crazy about B.connected with C.worried about D.anxious about
The crowd ________ eastward, believing that they can find gold there.
A.are headed B.is headed C.heads D.are heading
Jack became seriously ill after ________ in polluted air for many years.
A.breathed B.breath C.breathing D.to breathe
The new secretary is supposed to report to the manager as soon as she ________.
A.will arrive B.arrives C.is arriving D.is going to arrive
She ________ down beside me and soon fell a deep sleep.
A.lay B.lied C.laid D.lain
What ________ did the doctor write you?
A.prescription B.instruction C.description D.information