1. I ____ round the world if I _____ a free year.
a. had , would travel b. had , will travel
c. would travel , had d. will travel , had
2. If your mother ____ , I _____ a message.
a. phones , will take b. phones , taked
c. phones , would take d. had phoned , would take
3. If she ____ before she died , her sister ____ nothing.
a. would marry , got b. married , would get
c. would have married , had got d. had married , would have got
4. We don’t want anybody ____ that we are here.
a. knowing b. to know
c. know d. to knowing
5. Would you mind _____ the window and _____ a little air in?
a. open , let b. to open , to let
c. opening , letting d. to open , let