Many countries have a Mother’s Day, ________ they don't always fall on the second Sunday in May.
A.when B.though C.as D.once
In his daily life, the student ________ ignore work, study, and other activities to check his phone for messages.
A.fluently B.frequently C.immediately D.practically
5G is an exciting mobile technology, ________ will give a massive boost to smart cities and vehicles.
A.where B.when C.that D.which
Because society ________ so rapidly during the last few years, the gap between the generations has become larger.
A.changed B.had changed
C.has been changing D.was changed
Anyone with common sense is able to make the proper decision and do ______ suits the occasion best.
A.no matter what B.no matter how C.whatever D.however
__________ Beijing Opera to the basic education in China is a big step to promote traditional art.
A. Adding B. Added
C. Add D. Having added
