Whatever is left over may be put into the refrigerator, _____ it will keep for two or three weeks.
A. when B. which C. where D. while
If parents have children help with housework, the children will feel needed. , they will learn to take care of themselves.
A. On the contrary B. What’s more
C. That is to say D. In a word
I made a promise to myself _______ this year, my first year in high school, would be different.
A. whether B. what C. that D. how
Nothing is so easy as _____ parents to raise their expectations of their children too high.
A. of B. to C. by D. for
The air quality in the city, ______ is shown in the report, has improved over the past two months.
A. that B. it C. as D. what
Letterboxes are much more in the UK than in the US, where most people have a mailbox instead.
A．common B．normal C．ordinary D．usual
