单选题：I'm afraid Mr.Harding ______ see you now.He's busy.A．ca..

The hunter _____ down and _____ to the farmer that he had _____ his gun against the tree.A. lay, lied, laid B. lay, laid, laid C. laid, lay, lied D. laid, lied, lay

_____ printed, the novel will be popular among the college students.A. Before B. Once C. UnlessD. When

(2014·济南市名校第四次诊断性测试)—Is the letter from your mother?—Yes.But she ________the letter herself，because she doesn’t even know one word.A．needn’t have written　B．can’t have writtenC．might not have writtenD．should not have written

The boy was allowed to play computer games _____he finished his homework.A. in case B. by the time C. on condition that D. if only

—Can I pay the bill by check?—Sorry，sir．But it's the management rules of our hotel that paymentbe made in cash．A．shallB．needC．willD．can