I ___ (can/must/may) ride a bike because I learned how to when I was a child.
I can ride a bike because I learned how to when I was a child.
Yesterday at 8 p.m. we ___ (have) neighbors for dinner.
Yesterday at 8 p.m. were having neighbors for dinner.
If I ___ (study) more, I would have passed the test.
If I had studied more, I would have passed the test.
___ are used to generate electricity from sunlight.
Solar panels are used to generate electricity from sunlight.
She ___ (can/must/may) buy groceries because she has to cook dinner.
She must finish buy groceries because she has to cook dinner.
My father ___ (play) table tennis and my mother ___ (eat) chips.
My father was playing table tennis and my mother was eating chips.
If it rains tomorrow, we ___ (stay) at home.
If it rains tomorrow, we will stay at home.
Dinosaurs are an example of animals that are now ___.
Dinosaurs are an example of animals that are now extinct.
He ___ (should/may/can) be here by now; his plane landed 45 minutes ago.
He should be here by now; his plane landed 45 minutes ago.
Why ___ (you and your little sister) ___ (argue) when I entered your room?
Why were you and your little sister arguing when I entered your room?
If they ___ (not arrive) soon, we’ll miss the movie.
If they don't arrive soon, we’ll miss the movie.
___ is the slow wearing away of soil and rock by wind or water.
Erosion is the slow wearing away of soil and rock by wind or water.
You ___ (can’t/mustn’t/may not) eat food that is still raw.
You mustn't eat food that is still raw.
The children ___ (play) in the park when I ___ (get) there with my little sister.
The children were playing in the park when I got there with my little sister.
If you had told me, I ___ (help) you.
If you had told me, I would have helped you.
The weather ___ says it will rain tomorrow.
The weather forecast says it will rain tomorrow.
___ (May/Can/Should) I borrow your laptop? I need to use it.
May I borrow your laptop? I need to use it.
I ___ (read) a book when the power ___ (go) out.
I was reading a book when the power went out.
If I ___ (be) you, I would talk to the teacher about the problem.
If I were you, I would talk to the teacher about the problem.
___ are natural resources like coal and oil that were formed millions of years ago.
Fossil fuels are natural resources like coal and oil that were formed millions of years ago.