We shouldn’t spent our money testing so many people,most of _____are healthy
--- I rang you at about nine, but there was no reply. --- Oh, that was probably _______I was seeing the doctor.
---I lost my cell phone yesterday. Can you tell me _______ buy one like yours? ---Well, there is a department store just around the corner.
Along the way, students _______ school uniforms stopped to look at us when we were cycling on campus.
I am fond of my sister but she has one serious shortcoming. She _______ be really impatient.
---Can I smoke here? ---Sorry. We don’t allow _______ here.