Far from perfect though this trip is, I think it’s well worth _____ we paid.
—Shall we hang out tomorrow morning? — ________ I’ll save the morning for my essay.
-- Isn’t that Ann’s husband over there? -- No, it ________ be him. I’m sure he doesn’t wear glasses.
I didn’t believe the reasons he explained _____ me.
He is difficult ________.
The number of people present at the meeting_________about 1000 , a large number of whom _______ experts from abroad.