---What’s that terrible noise, David?

---Oh, I forgot to tell you．The new machine in the nearby plant_____．

       A．were tested                                       B．will be tested    

       C．are being tested                                 D．have been tested

 Say “Cheese” but keep_____ while I take your photograph．

       A．quiet            B．calm                  C．still              D．silent

 ---How will she behave in case of our failure?

       ----She’ll put the blame on us if it______ badly ．

       A．turns up         B．turns down     C．turn off          D．turns out

 No matter how low you consider yourself, there is always someone______ you wishing they were that high．

       A．getting rid of                                    B．getting along with    

       C．looking up to                                  D．looking down upon

 Don’t give up regardless of difficulty and failure,______ you ‘ll never achieve your goals．

       A．and                B．but                C．or              D．so

 Steps must be taken ______this kind of disaster will never happen again．

       A．because            B．even if              C．as              D．so that

 Please keep me informed_______ the change of your address as soon as possible．

       A．of                 B．for                 C．with                                    D．by

 One of the most important questions they had to consider was _____of public health．

       A．what              B．this                 C．that                                    D．which

 The lady walked around the shops,______ an eye out for bargains．

       A．keep                B．kept               C．keeping        D．to keep

 I go _____to the stadium when there’s a game．But usually I watch it on TV．

       A．typically            B．anxiously           C．frequently      D．occasionally