It’s been over a year since I ______ back from the countryside.
| A．come | B．came | C．will come | D．had come |
__________ ups and downs in the past four years，Bob finally succeeded in extending his business overseas.
| A．Experienced | B．To experience |
| C．Having experienced | D．Experiencing |
Some experts believe ________ our personalities are largely determined by genetic factors.
| A．that | B．whether | C．what | D．how |
—Did you watch the live broadcast of China’s military parade on September，3rd？
—It’s a pity that I missed it．I ________ to New York then.
| A．would fly | B．flew | C．was flying | D．have flown |
When I asked if __________ would help me，Tony was the first to volunteer.
| A．everyone | B．none | C．anyone | D．all |
The hikers made marks on the way ________ they wouldn’t get lost in the mountain.
| A．as if | B．so that | C．even though | D．in case |