①_____ is well know to us all that the earth is round.②____ is well known to us all, the earth is round.
A: That
B: As②
C: It①
D: Which
A: That
B: As②
C: It①
D: Which
举一反三
- ______ is well known to us all that the earth is round.______ is well known to us all, the earth is round.
- As is known to all that the earth is round.
- As we all know, the earth is round.As is______ ______ ______ , the earth is round.
- It’s well known ______ the earth moves round the sun.
- _________ is known to all is that the earth goes round the sun.