simply couldn’t understand how it _____ that you did so much work within such a short time.

The boy _____ by the window is the only one of the students who _____ from the countryside in our school.

Too much fishing may harm fish population to the point________they can’t recover.

by the doctor’s words, he made uphis mind to fight against his cancer.

rn English well, we should find opportunities tohear English______ as much as we can.