I don't understand my teacher's great love ______I become a teacher myself.
if
until
since
though
—There is too much rain in many parts of the world now. —That sounds ________.
The food safety is a serious ________ in our country.We should try to solve it.
—How’s it ________? —Pretty good.
Be quiet!The other students ________. A.sleep B.slept C.are sleeping
—Is Ma Ming in? —No,why not ________ her a message?