1、Mother told ____when we meet difficulties.
A. us staying calm B.I to be brave C.me keep strong D.me not to worry
2、She’s taking one week _____over Christmas.
A.out B.of C.away D.off
3、It seemed only seconds ____the boy finished washing his face.
A.when B.before C.after D.even if
4、I recognized you ______I saw you at the airport.
A.once B.after C.while D.the moment
5、He was about to go to bed _____the doorbell rang.
A.while B.as C.before D.when
