Annie _______Jeff when they were both 25years old.
----How are you going, buddy? ----________. A little busy, though.
----Let’s go and listen to Mr Smith’s speech on Western culture, shall we? ----_______ It’s getting to the end.
My father told me _______.
Scientists from different countries are trying to_______ a good way to solve the energy problem.
Detective Lu thought that ________ Xie Yiming ________ Wang Gang were likely to kidnap Guan Fei, Guan Dawei’s son.