Clearly there is much to be desired _____ it comes to the quality of teachers and their teaching methods.

Before the bridge was built ______ the river, thevillagers had to take a boat to the other side.

－Tomorrow isSunday. Are you going swimming－I’m not sure.It ______ the weather.

I’ve won a holiday for two days to FloridaI ______ my mum

Haven’tseen you for ages! Do you still work in Guangzhou—______ It’s two years since I worked there