They do not visit their parents as much as they ought to.
举一反三
- My parents are quite aged and they can’t travel as much as they used to.
- —_______ do you visit your parents? —Once a month.
- A hundred dollars ___ not buy as much as ___ used to. A: do, they B: does, that C: does, it D: do, it
- I’d like to go with you, but with so much work to do today I’m (able) ____ to.
- You ought to go to visit him, ____?