----Can he work out the maths problem? -
问题:
----Can he work out the maths problem?
----I think _____ hard for him to work it out.
A.it’s
B.that’s
C.this is
D.they’re
----Can he work out the maths problem?
----I think _____ hard for him to work it out.
A.it’s
B.that’s
C.this is
D.they’re