Ipreferthisdiagram________thatone.
A、thanIshallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
________ (catch) in the rain, he was wet to the skin.
I know it isn ’t important but I can ’t help ________ about it.
________ (fail) several times, they need some encouragement.
How long ________ they ________ (dig) the ditch?