－Oh, the traffic is too heavy.－Let’s change ________route to the airport.

It’s clear__________ that a hard working student has___________ a great interest in science

I don’t remember _____ the book yesterday.

Stanly has graduated from the university—It’s no wonder that I can’t see him these daysHe ___ in the city for six years

_ the sun was shining, it wasn’t very warm.