Tom is very sleepy.________ , he is still doing his homework.

s is recorded in history, silkwormswere first raised by a woman in ______ is today Hebei Province.

We can’t besuccessful ________ we keep working hard.—I agree withyou.

It will be lessthan a fortnight_______we get to a turning point in our life.

Shall we go and ______ hello to the oldman—Good idea! Let’s go.