Look!There______ a pair of glasses and two boxes on the table．（ ）
A．isB．areC．wasD．were
______a clock on my desk． It wakes me up every day．（ ）
A．There areB．There beC．There is
My cousin______100 model planes since 2015．（ ）
A．collectsB．is collecting
C．has collected
______to turn off all the lights when you go out．（ ）
A．RememberB．To remember
C．Remembering
Could you tell me ______you will start your vacation？
In a week．（ ）
A．howB．whatC．when
Mum， I'd like a cup of coffee．
Dear， why not drink some water？It's ______than coffee．（ ）
A．healthyB．healthier
C．the healthiestD．healthy