Charlie's wheelchair ______ out of power. He drove it into my office and looked for a place to charge it.
A.run B.have run C.had run D.was running
Chinese students overseas are encouraged to return, ______ they honestly fill out medical forms and strictly follow the quarantine rules.
A.though B.as long as C.unless D.the moment
There are over 50,000 signs in modern Chinese but luckily, Chinese children ______ learn all of them for everyday purpose.
A.needn't B.mustn't C.can't D.won't
The weather here is great, with temperatures ______ from a low of 55°F to a high of 75 °F in the summer.
A.range B.ranged C.to rang D.ranging
Physical labour can exhaust the body very quickly. ______, too much study can rapidly reduce mental powers.
A.Otherwise B.Equally C.Finally D.Additionally
Poor Mr. Perkins had to wait patiently until his car was the only one that ______ in the parking lot.
A.left B.would leave C.was left D.had been left
