There are some trees on one side of the road and some factories on _____.
If the question_________ incorrectly,_________question will be given to you.
—Can you work put the physics problem? —Sorry, I can _________ understand its meaning.
—Remember to close the door when you leave.
—Why not join us in the game,Kitty? —_________, but I have to do my homework first.
—Could you tell me_________? —By underground.