Parents ______ good conditions(条件) _______ us. We should be grateful(感激的)to them.
We must pay attention to _______ the teacher carefully in class.
We __________for a picnic if it ___________this Sunday.
The house ________ in1950.
The book _______ my husband bought in Shenzhen yesterday was very interesting.
Four thousand kilometers _________ not a short distance.