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I really don’t know _________ I put my wallet after I paid the bill．

________ these experiments were successfully completed would we think of going into humans.

________ the instructions very carefully when filling in the form.

Helen has got ________ it takes to be a great tennis player. In other words, she has the potential to become world famous.

It is so cold here in Zhengzhou this winter that it seems as if we ______ in Iceland.

All the students don’t want ________ any misunderstanding among them.

The student must be working very hard, ________?

At long last the child was found on top of ______ we call the museum of science and technology.

College graduates are offered lots of available jobs, ______, I believe, they can fully demonstrate their knowledge and competence.

Directly he arrived the bus station, then ____ he had intended to take.