1.We can finish the work on time because the twins help us（改為同義句）
（ ）（ ）（ ）the twins,we can finish the work on time.
2.Our knowledge of the each is always growing.（改為同義句）
Our knowledge of the each is growing( )( )( ).
3.Man-made satellites have seen set up into space by many countries.(改為主動(dòng)的）
Many countries ( ) ( )( )satellites into space.
4.You must finish your homework (in two hours).(對(duì)括號(hào)里面的成分提問(wèn)）
（ ）（ ）（ ）I finish my homework?
5.That's how to solve the problem .
That's how the problem ( )( ).