A
Oliver is a host of a TV programme on food.He says food （1）
plays/has played/is playing/has been playing
plays/has played/is playing/has been playing
（play） a big role in his life. "My mum was a great cook，and she'd sometimes let me have a try，" he said.The first dish Oliver prepared for his family was fried chicken wings.He made it with his mum's help.Oliver says if you're （2）
lucky
lucky
（luck） enough to have someone close to you who enjoys cooking，ask them （3）
if/whether
if/whether
you can join in when it's possible.
B Single-use plastic bags are used at most a few times before they （4）
are thrown
are thrown
（throw） away.It takes them hundreds of years （5）
to break
to break
（break） down.Many of these bags end up in the ocean where larger ones can trap sea creatures，such as turtles and dolphins.Over time，the bags fall apart （6）
into/to
into/to
countless tiny pieces，and fish can accidentally eat some of them.Now，lots of （7）
countries
countries
（country） and regions are taking action to ban the sale of such bags to stop people using them.
C A piece of stone （8）
found
found
（find） on a Dutch beach suggests that our extinct human relatives，known as Neanderthals，were cleverer than previously thought.The Neanderthals （9）
lived/had lived /had been living
lived/had lived /had been living
（live） alongside human ancestors in Europe for tens of thousands of years，before dying out about 40，000 years ago.They were much stronger than modern humans，but it's long been assumed that human ancestors were （10）
smarter
smarter
（smart） than the Neanderthals.However，the stone tool made by Neanderthals suggests otherwise.
