While I ________ in bed, mom got up to cook breakfast for me.
A.sleep B.was sleeping C.sleeps D.am sleeping
________ our lives and protect others, doctors and nurses fight against Covid-19 bravely.
A.Save B.Saving C.Saved D.To save
—Would you mind parking your car over there? I can't drive out.
—________, I'll drive it away at once.
A.Yes B.Sure C.Of course D.No, not at all
Please ________ the microphone to the computer, and everyone can hear you.
A.cover B.communicate C.connect D.congratulate
—I'm not sure ________. Do you know?
—In 1876, I think.
A.when the telephone was invented B.when was the telephone invented
C.when did the telephone invent D.when the telephone invented
We ________ to go out without wearing medical masks to avoid getting ill.
A.don' tallow B.allow C.aren't allowed D.are allowed
