问题描述:
so far the students about 5000 trees
A.have planted
B.had planted
C.planted
D.plant
hardly__he __the work when the Bell__
A./,finished,rang
B./,finshed,has rung
C.had,finished,rang
D.had,finished,had rung
how long__you__the ditch?
for 3 hours
A.have ,been digging
B.had,dug
C.are ,digging
D.dig,dig
A.have planted
B.had planted
C.planted
D.plant
hardly__he __the work when the Bell__
A./,finished,rang
B./,finshed,has rung
C.had,finished,rang
D.had,finished,had rung
how long__you__the ditch?
for 3 hours
A.have ,been digging
B.had,dug
C.are ,digging
D.dig,dig
问题解答:
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