intended to be there for a few days,but I ________ ended up staying for a whole month

You know Jane?—Yes, it was _____ I surfed the Internet last week.

Which of the two T-shirts would you like – ________. I don’t like their styles.

The rapidly growing birth rate brings about a lot of environment problems, which the government is supposed to take _____

With the living environment becoming worse and worse, many of the earth’s species are ______.