The man is teaching in our school, but，believe it or not，he __ as a business man for 8 years.
| A．worked | B．was working | C．had worked | D．has been working |
Passengers are permitted______ only one piece of hand luggage onto the plane.
| A．to carry | B．carrying |
| C．to be carried | D．being carried |
Bats are surprisingly longlived creatures, some______ a life span of around 20 years.
| A．having | B．had |
| C．have | D．to have |
It's important for the figures______regularly.
| A．to be updated | B．to have been updated |
| C．to update | D．to have updated |
Lionel Messi ________ the record for the most goals in a calendar year, is considered the most talented football player in Europe.
| A．set | B．setting |
| C．to set | D．having set |
The difference in thickness and weight from the earlier version makes the iPad 2 more comfortable______.
| A．held | B．holding |
| C．be held | D．to hold |