Not having promoted the new digital camera successfully, the company should its original marketing methods.
| A．account for | B．reflect on | C．work out | D．call up |
. ______ we are sure about is the need to prevent children from being spoiled.
| A．What | B．Which | C．Whether | D．That |
. I was wondering what it is _____ has made her so popular with her workmates.
| A．that | B．which | C．how | D．who |
She ______his number in the phone book to check that she had got it right.
| A．looked up | B．looked after | C．picked out | D．picked up |
Food safety is _____ important, so the government spares no efforts to prevent food pollution.
| A．highly | B．eventually | C．gradually | D．easily |
Have a good look round the room to you have packed everything for holiday.
| A．make it | B．make sense | C．make sure | D．make up |