– Let’s go and listen to Mr Smith’s talk on Western culture, shall we?–_______ It’s getting to the end.
By the time he ______ at the railway station, the train ______.
–We will visit the Summer Palace ______ there is a heavy rain tomorrow. --OK! Boating on the lake must be great fun.
–How long ______ the restaurant ______? --For eight years.
–What should I do ______ healthy, doctor? --You should take more exercise.
–Have all the boys known that they ______ an English test this afternoon? --Yes. Every boy has been told about it.