单项选择题
A．many letters were found on the desk B．I found many letters on the desk C．there were many letters on the desk D．there existed many letters on the desk
A．$100. B．$113. C．$130. D．$120.
A．Something is wrong with the bus. B．He took somebody to hospital. C．Something prevented him taking the bus. D．He came on foot instead of taking the bus.