Choose the correct option
There was such [thick|hard|dark] fog that I could hardly see where I was driving.
It is [freezing|mild|boiling] cold today.
The leaves blew gently in the [breeze|gale|storm].
Sam's flight [leaves|is going to leave|will leave] at 5 pm.
The burning of fossil [gases|fuels|fumes] produces carbon dioxide.
Unless Tom trains hard, he [will win|doesn't win|won't win] the surfing competition.
On the Appalachian Trail, there are lots of white signs so that you don't [get|be|have] lost.
Don't [turn|put|push] up the heat – wear more clothes instead!
There might not be any polar bears in 100 years, and many other animals may become [extinct|threat|trouble], too.
Do you want to [do|go|play] cards?
A: I'd like to book a room.
B:[Certainly. What dates?|That's fine.|How can I help you?]
If the temperature rises above 0 degrees Celsius, ice [is melting|is going to melt|melts].
Deer are [harmless|incredible|threatened] animals; they aren't dangerous at all.
Stalactites grow from the ceiling as water [dissolves|melts|drips] from them.
Greenhouse gases [trap|vanish|surround] the Earth like a blanket.
Adélie penguins are [at|in|under] danger in the Antarctic.
If you like snowboarding, you [love|are loving|'ll love] volcano surfing!
Scientists hope to [adapt|discover|form] more troglobites in caves.
The sun never [sets|drops|falls] in the summer in Antarctica.
There is a [blizzard|thunderstorm|drought] when there is no rain for a long time.
Don't eat that meat; it's gone [over|down|off]!
When people burn fossil fuels, temperatures [rise|are rising|will rise].
I wish I [don't leave|hadn't left|didn't leave] my rucksack at home.
If you [wear|had worn|wore] protective clothing while volcano surfing, you wouldn't have hurt yourself.
A [shower|flood|drizzle] is a short period of rain.
[Prevent|Escape|Avoid] coyotes and bobcats – they're dangerous.
If Sam [will finish|is going to finish|finishes] his school project, he can go out.
A: What kind of room would you like?
B:[A single, please|Yes, please|Two nights].Amy can't come sailing with us. She's going [around|off|over] her history essay.
If I [am|were|had been] you, I would go camping.