The Science Museum, ________ we visited during a recent trip to Britain, is one of London’s tourist attractions.
After the new technology was introduced, the factory produced _____ tractors in 1998 as the year before.
----- shall I sit this end or _____ of the boat? -----_______ if you keep still.
Like the Olympics, the World Cup takes place _____ years.
I _____ her, but I _____ her.
I’ll be back _____ 5 o’clock tomorrow afternoon.