Rose cooks meals at home on Sundays．She never eats ________ her mother comes back and she'd like to enjoy it together．（ ）
A．untilB．whenC．after
Dr.Yuan Longping had a dream that he could develop rice as ________ as peanuts （花生）.
A．largeB．largest
C．largerD．the largest
一 How long may I ________ your magazine？
一 For one week.But it mustn't ________ to others.
A．borrow；lendB．keep；be lent
C．lend；be borrowedD．have；lend
It's parents' job to ________ a clean and comfortable environment at home ________ their children.
A．support；withB．offer；with
C．give；forD．provide；for
一 What were you doing at the time of the rainstorm yesterday？
一 I ________ at the library after school.
A．readB．was reading
C．am readingD．was read
一 I can't get on well with my family.
一 Why not talk with them？You should communicate ________ things become worse.
A．untilB．unlessC．afterD．before