—Can I call on her next week ?— Yes,if ______ .
I met an old friend __________ on the train yesterday.[
Her brother be at home now, because he was seen playing basketball in the stadium just now.
In the dark street, there wasn’t a single person _________ she could turn for help.
She pretended __________ me when I passed by.
The old couple has two children, __________ able to come to see them when they feel lonely, however.