Some scientists ___________ that there are 100 billion stars just in our galaxy

• estimate

• realise

I'm sorry I didn't call. I didn't ____ it was your birthday.

• realise

• assume

I followed you because I ________ you knew the way.

• doubted

• assumed

I ________ how much she earns in a month. It must be at least $2000.

• wonder

• came to the conclusion

As I left the flat, I _______ that someone was following me, and I was fairly sure I knew who it was.

• was aware

• doubted

I feel quite _______. I think I'm going to faint.

• dizzy

• newbie

It hurts when I try to stand up. I think I've ______.

• strained my back

• broken my shoulder

She's a student nurse. She ________ in the hospital.

• cares for patients

• heals customers

They hit me in the head and I _________.

• lost conciousness

• strained my ankle

When the wound ______, it will probably leave a _______.

• heals / scar

• cares / bruise