“What courses are you going to do next semester”

“I don ’t know. But it’s about time _____ on something.”

Last March the __________ of a 19th century cargo ship was found by an underwater archaeological team.

青年女性李××，平素体健，三日前突受惊吓，先心悸易惊，作卧不宁，少寐多梦，舌苔薄白，脉弦治疗宜选

He set up in business（）his own and was very successful.

Thethreementriedmanytimestosneakacrosstheborderintotheneighboringcountry_____bythepoliceeachtime.