4. Complete the sentences with because or so.
(Hoàn thành các câu với becausehoặc so.)
1. I can’t play football today ……………. I’ve sprained my ankle.
2. I cut my hand badly today ……………. my mum took me to hospital.
3. I fell off my bike ……………. now I have a big bruise on my arm.
4. I couldn’t see ……………. I wasn’t wearing my glasses.
5. I’m bored ……………. my computer isn’t working.