Dr. Smith will never leave his parents he is sure both of them are taken good care of.
A.since B.unless C.if D.though
Parents should keep an eye on little children all the time, they can easily get hurt.
A.or B.and C.but D.so
I know you have already tried your best, so you worry too much about the final exams.
A.can’t B.needn’t C.mustn’t D.shouldn’t
To help people travel around the city more easily, more underground lines in the next few years in Shanghai.
A.are built B.will build C.are building D.will be built
the morning of April 1st, Tracy played a joke on her best friend by phone.
A.In B.On C.At D.To
Our class teacher said that we the 3D Printing Cultural Museum next Thursday.
A.visit B.visited C.will visit D.would visit
