－Have you seen Mr. Black these days, Jack?－Yes, I met him when I _______

－Have you seen Mr. Black these days, Jack?－Yes, I met him when I ________ in the street yesterday.

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walked

was walking

have walked

is walking

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The boys are going to_______ this afternoon.

#50194

play soccer

play the soccer

playing soccer

played soccer

The man went into the room, _____ rather strange.

#50355

to look

looking

looked

and looking

All the children like Mr. White very much because he often makes them________

#50805

laughed

laughing

laugh

to laugh

 It will be difficult for a robot       the same as humans.

#48768

to do

doing

does

It’s important __________ fire.

#50876

to care

be careful

to be careful

to be careful with

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