?which one is your book
my book is...........a plastic cover
1)the one with
2)that has
3)the one has
4)one with
You will not be able to slove this problem......... you study the lessons again.
1)although
2)since
3)unless
4)when
I will not write to him..........he writes to me first.
1)as if
2)in case
3)since
4)unless