______ she began reading and saw what fun it was, there was no stopping her.
A. Unless B. Once C. Until D. Though
We recommend you ______ at least 15 minutes before the start of your tour.
A. arrive B. arrived
C. will arrive D. have arrived
I also felt guilty, as all fathers do at a time like this, wondering whether there was anything I ______ to have prevented this situation from rising.
A. would do B. could do
C. can do D. could have done
Children are not born with their habits already _______.
A. to make B. to be made C. making D. Made
This is your home, _______ you may treat it as.
A. whenever B. whoever C. whatever D. Wherever
I recently read that it’s good to walk a lot; ______, I’m getting off the bus a few stops early and walking the rest of the way.
A. however B. therefore C. instead D. Otherwise
