Jack decided to buy himself an iPhone 4 _______ it means standing in line all night waiting.

A. so that                           B. as if                       C. even though                   D. however

Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.

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

Bob is determined to get a seat for the concert _______ it means standing in line all night for the ticket.

A. so that                        B. as if                      C. even though          D. however

He disappeared last month, _______ we have heard nothing of him.

A. when         B. after which          C. from which        D. since when

(  ) Time ______, I’ll go to Nantong to have a short visit and we’ll have a meeting there.

A. to permit   B. permits   C. permitting   D. permitted

With their reputation ______,food companies need to ______ their image.

A. ruining, promote  B. ruined, polish up   C. to ruin, improve   D. to be ruined, change

At last we found ourselves in a pleasant park with trees providing shade and _______ down to eat our picnic lunch.

A. sit                         B. sitting                 C. to sit                  D. sat

With the guide ___________ (lead)the way tomorrow, we’ll find the village easily.