We teachers must see to ________that every student can understand.

—Can I ask you a few straightforward questions about yourself?—No problem. I like ________ when people are open and direct.

—Will you take the blue shirt or the yellow one?—     is the right size for me, I’m afraid.

No agreement was reached in the discussion as neither side would give way to ______.

China’s first manned spaceship “Shenzhou Ⅴ” was sent up into space on October 15 and returned safely to the earth on October 16,______ is a great honour for our great motherland.