选择以下必修4词组，并用其正确形式填空（4分）

crowd in     look down upon/on    rid…of    focus on up to now    no wonder       be likely to   badly off

小题1:He ______________people who’ve never been to university.
小题2:Last night they _____ the dormitory______ mice which made much noise at night.
小题3:We should satisfy ourselves with the living conditions
----many families are much _______________than we are.
小题4:I will stay at home this evening; she ______very ________ ring me tonight.