在下列各句的空格內(nèi)填上一個(gè)適當(dāng)?shù)耐暾膯卧~,該詞的首字母已給出.（括號(hào)前的字母是這個(gè)單詞的首字母）
To keep the s() peaceful,everybody is supposed to obey the law.
However,the extra money from the part-time job will strongly s() students in continuing their studies.
We had a s() room,so we invited Mrs Smith to stay with us for a few days.
They waited and w() what to do next.
"Don't forget to take an umbrella with you!"Mum r() me.