31．Which sign means“No Photos”?

30．As soon as he ________ the bus，the poor man realized he had left his wallet on it．

A．got on                    B．got off                    C．got to                    D．got in

29．Newton was playing under an apple tree ________ an apple fell onto his head．

A．when                      B．while                      C．after                       D．before

28．Daniel is a careful driver，but he drives ________ of my friends．

A．more carefully                                           B．the most carefully

C．less carefully                                              D．the least carefully

27．My son wants a pet rabbit for long，but I have no time to buy ________ for him．

A．it                           B．that                        C．the one                   D．one

26．She has written a lot of books，but ________ good ones．

A．any                        B．some                      C．few                        D．many

25．--I didn’t know this is a one-way street，sir．

--________ Please show your driving license．

A．I don’t care．                                            B．Sorry，but that is no excuse．

C．It’s all right．                                            D．I hope so．

24．--Excuse me．How can I get to the flower shop?

--Turn left and then follow your nose．You ________ miss it!

A．mustn’t                  B．can’t                      C．shouldn’t                      D．needn’t

23．If it ________ heavily tomorrow，we have to stay at home．

A．rain                        B．rains                       C．will rain                 D．raining