It’s dangerous to have the fire _______ at home all night long.
Cloning plants is straightforward while cloning animals is _____________ more complicated.
The doctor recommended that you ____________ swim after eating a large meal.
Only a small percentage of the graduates ___________________ a job.
– What do you think of my sofa? -- Well, great! But don’t you think it will _____________ too much space?
Maybe you have been to many countries, but nowhere else _____ such a beautiful palace.