—Tom wants to know if you ________ a picnic next Sunday.—Yes. But if it ________, we'll visit the museum instead.
Books are made________paper while paper is mainly made________wood.
I saw Jenny_________near the river on my way home.
Jim failed in the test because he was_____________in the exam.
She is a_______mother.
--What do you usually do in the morning? --I often practice_________English.