---- How long do you suppose it is ________he arrived here ? -----No more than half a week .
26.— Why is little Jimmy so naughty today? — He is bored, so he _____ a little silly.
25.— Real Madrid is sure to win the match! — It's hard to say.You know, anything _____ happen even in the last minute.
24.Thomas set off, leaving word with his daughter _____ he would come back soon.
23.Our train was two hours ______ because of strong winds and heavy rains.
22._____ computer has been proved to be _____ important aid in classroom teaching.