I ________ over my cup by accident. The water almost ruined my computer.
A.knocked B.turned C.picked D.jumped
Where did you go? We were worried about your ________.
A.health B.value C.safety D.habit
(2019唐山市路南区二模) This is a ________ matter. Don't joke about it.
A.serious B.difficult C.proper D.relaxing
(2019 石家庄裕华区一模) I didn't hear someone knocking at the door. I ________ to my friend on the phone at that time.
A.talk B.talked C.is talking D.was talking
(2019 石家庄市一模) It's ________ to divide the waste into different kinds before we get rid of it.
A.necessary B.possible C.interesting D.humorous
noise pollution, and we can live in a quiet environment.
A. Prevent B. Preventing C. Prevented D. To prevent
