Joana....................(wash) her face regularly to prevent spots 2) I*m really busy now. I......................(study) for the first semester test

1.Joana....................(wash) her face regularly to prevent spots
2. I*m really busy now. I......................(study) for the first semester test.
3. About one- fifth of the American population..............volunteer work each year. (make)
4. She (work).....................as a volunteer since 2007.
5. Nam*s friend (often/give)..............................him stamps from other countries.
Có giải thích nha 0 có cũng đc