How long ________ they ________ (dig) the ditch?
have … been digging
暫無(wú)解析
Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
I shall never forget ________ (meet) the late Premier Zhou during his inspection of our factory.
Matter is the name ________ (give) to everything which has weight and occupies space.
Iknowitisn’timportantbutIcan’thelp________aboutit.
How long ________ they ________ (dig) the ditch?
