udent must be working very hard, ________

n a remote Scottish island are gradually shrinking _______ global warming, accordingto a study published in the journal Science

time he realizes he ____ into atrap, it’ll be too late for him to do anything about it.

My father read through my composition and _________quite a few spelling mistakes in it.

acks and drinks , but they also brought cardsfor entertainment when they had a picnic in the forest