Tom, you should be polite and let our grandpa get the car first.— OK. And I will open the door for him.

Tom, do you know if Sam ________to my party next week?—I think she will come if she________ free.

. From this simple concept ________ that has caused a great change in farming.

What’s that English . —It’s a book.[ ]

Tom is very clever______ maths and English. [ ]