I have to well prepare for the math test tomorrow because it ______ 30% of the final exam.

Don’t lose heart. It won’t be long ___________ you catch up with others.

What do you think of Billy, the shortest boy in our class? —I think he is _________ honest boy.

What does Mrs Li teach?—She is ________ English teacher, and she teaches __________ English very well.

________of the chemical factories in their city _________pouring waste water into the river. It’s too dangerous.