Even if you are in rush, pushing someone so that you can get into an elevator (电梯) is just bad manners.
— Would you like to go to Paris with us next year ?— I’d like to, but my mother ______ that I am too young.
People have planted a great many trees in order to ____wind and sand in the desert.
— So, how is your new roommate ?— She really ____. She always making loud noises at midnight and when I remind her , she always makes rude remarks.
At times the balance in nature is ______ , resulting in a number of possibly unforeseen effects.
He _____the problem _____in his mind for a whole week before he did anything about it.