Supply the correct form of the verbs in the parentheses: When Mr.Minh (look) ... out, he (see) that the children (play) ... the swings

GIÚP MÌNH BÀI NÀY VỚI Ạ !!!!!!!!!!!!!!!!!!!
Supply the correct form of the verbs in the parentheses.
1. When Mr.Minh ( look) ........................ out, he (see) that the children (play) ................. the swings.
2. These skirts need ( iron ) ...................................
3. I only ( use ) .................... this pen once since the day I had it ( mend ) .............................
4. Most people prefer ( spend ) ................ money to ( earn) ....................... it.
5. I ( meet ) ................... him twice this week but I ( not / speak ) .................... to him.