flew and flown

Be responsible for
He is responsible for his own health

I went to a party at Al's last Saturday night.

Why was John late?

Because I did not study, I did poorly on the exam.
OR
Because I did not study, I didn't pass the exam.
OR
Because I did not study, I couldn't write the essay.

swim and swum

Be devoted to
The teacher is very devoted to her class.

I haven't been able to reach Doctor Kline on the phone yet.

How long have they lived in the same house?

I can't study unless the music is off or turned down low.
OR
I can't go to the party unless I find transportation.
I can't drink milk unless it's lactose free.

meant and meant

Take advantage of
It's not nice to take advantage of those recent immigrants.

It looks like rain. We should shut the windows.
OR
It looks like rain. We'd better shut the windows.

Who works at the university?

I had never eaten jackfruit before I went to Indonesia.
OR
I had never seen Star Wars before I came to the US

froze and frozen

Be familiar with
I am not familiar with that new computer program.

The electric light bulb was invented by Thomas Edison.

How did you come to school?

While I was studying, my friend was cooking.
OR
While I was sleeping, the childen were watching tv.

shrank and shrunk

Be exhausted from
John is exhausted from the desert heat.

If I taught this class, I wouldn't give tests.
OR
If I taught this class, I wouldn't use a textbook.

Which pen do you want?

By the time Susan arrived, Bob had already eaten.
OR
By the time the bus came, Bob had already left.
OR
By the time the sun rose, Bob had run 10 miles.