Открой скобки используйте.Use Present Simple.
1.She can (to jump) very high.
2.I seldom (to wash) the floor.
3.My friends (to live) in Moscow.
4.Nick (to study) in the 5th form.
5.We must (to help) our parents.
6.Dick (to collect) CDs and (to buy) them very often.

She can jump...I seldom wash..my friends live...Nick studies...we must help...Dick collects CDs and buys..