It was generally believed that the show was not as successful as expected, but ________, I think it was a great success[ ]

There is a lot of smoke coming out of the teaching-building there.—Really?It _________ be a fire,most probably.

Don’t waste your money on silly things —______ it.

Nancy is a good student. She studies hard she also likes to help others.

–Did you _____ your sister when you were in Shanghai?–No. But I _____ my uncle’s during my stay there.