21 I _____picked up the receiver, I realized that someone dialed the wrong number.
A the moment B a moment ago C after a minute D minute after
22 Why so many youths are____ on playing computer games often puzzles us a l ot.
A fascinated B crazy C keen D fond
23 With all the family members ____on vacation without him, the boy felt extremely lonely a nd afraid.
A to have gone B going C h ad gone D gone
24 She made a promise____ anyone could save her life, she would give him all her wealth.
A which if B that if C that D if