_____ the woman entered the office, Tom’s eyes lit up.
A. Immediately B. Before C. For D. With
Look! The road ____________
A. is repaired B. was repaired C. is being repaired D. was repairing
The primary purpose is to _____ those achievements in biological research _____ the public.
A. make; known by B. make; known to C. make; know to D. make; knowing by
____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.
A. A; a B. The; / C. /; the D. A; the
— What made your skin look so terrible?
— _______ to the sunlight for a long time.
A. Because it was exposed B. After being exposed C. Being exposed D. Exposed
Only after a baby seal is pushed into the sea by its mother _____ to swim.
A. how will it learn B. will it learn how C. it will learn how D. and it learns how
