Modal verbs of speculation and deduction - Present
Modal verbs of speculation and deduction - Past
Third conditional
About the US
Adjective suffixes
100

She ___ be German because she's got a German passport.

must

100

Somebody called before. lt (be) Jack, but I didn't recognise the voice.

might/may/could have been

100

If I (pass) my driving test, my parents would have bought me a car.

had passed

100

The __ is the US dollar ($).

currency

100

There are no clouds at all. It's (doubt) that it'll rain today.

doubtful

200

Sarah ____ be Toby's sister because she looks totally different.

can’t

200

You (see) Mike yesterday because he wasn't here.

can’t/couldn't have seen

200

They (buy) her a present if they had known she was getting married.

would have bought

200

Washington DC is the ___ ____.

capital city

200

He's a very (care) writer. He makes lots of mistakes.

careless

300

I don't know him. He ___ be nice.

may, might, could

300

It (rain) last night because the roads are wet this morning.

must have rained

300

If her goldfish (die), she would have been really sad.

had died

300

The ___ is called the 'stars and stripes'.

flag

300

It isn't very (sense) to go out in the rain without a coat.

sensible

400

That ____ be my notebook because it's red and mine's yellow.

can’t

400

It (snow) last night because it isn't cold enough for snow.

can’t have snowed

400

If the sun (shine) yesterday, we (go out).

had shone / would have gone

400

A/An ____ ____ of the US is an eagle.

national symbol/national emblem

400

You have to follow (science) procedures when you work in a laboratory.

scientific

500

They ___ like cats, they've got ten!

must

500

Somebody broke a window. Josh (do), but I can't be sure.

might/may/could have done

500

She (send) him an email if she (know) his address.

would have sent / had known

500

The ___ ___ begins 'Oh say, can you see, by the dawn's early light'.

national anthem

500

He disappeared. It was very (mystery).

mysterious