May/Might/Could/Will Probably/Will definitely
Articles a/an, the, no article
Who Which Where Whose
100

Andy will ........ come sightseeing with us.

A might     B could    C definitely

C definitely

100

l'm visiting ....... friend in ........ USA.

a, the

100

Jim, ……… brother is a basketball player, goes to the stadium every Sunday.

whose

200

We ........ go scuba diving this afternoon. 

A definitely   B may    C probably

B may

200

Did you enjoy your trip to......... Solomon islands?

the

200

Rosie showed me her photos ……… she took in Australia.

which

300

Perhaps they'll go backpacking across Europe.

They may be go backpacking across Europe. 

300

I got it from ....... nice shop in ........ Oxford Street, in ........ London.

a, -, -

300

The rain started in the afternoon, ……… Jane was riding her bike.

when

400

There's a slight possibility of rain tomorrow. 

Ir might rain tomorrow.

400

....Big Ben in ......London is not ......building.

-,-, a

400

Tim told about his friend ………is a baseball player.

who

500

It's ceratain that Maria will try the local dishes. 

Maria will definitely try the local dishes.

500

.....Amazon River crosses three countries in.....South America.

The, -

500

Liza saw the river ……… Bill went kayaking last summer.

where