It is written clearly in the requirements that all passengers _______ check onto board thirty minutes before the plane takes off.

(2013·江苏高考)I am always delighted when I receive an email from you.________ the party on July 1st I shall be pleased to attend

Must I leave for the meeting now—No, you ________. There’s much time before the meeting.

His ________ description of his adventurein the forest made us want to have a try ourselves.

17．Puppy love is _________．