1.have you seen a woman __(pass)by?yes,i have seen her __(pass)by and __(take)her baby to the hospital .
2.i tried__(make) him understand .it was no good __(get)angry.
3.we had to walk there __(be)no taxi.
4.he happened __(to be)there once.
5.you can see the air __(coming)out of your mouth in cold weather.
參考答案:pass, passing, taking
to make, getting
being
to be
coming