The first camera phone appeared ____ May 1999 in Japan.

• since

• for

• on

• in

The first camera phone appeared ____ May 1999 in Japan.

• since

• for

• on

• in

The first camera phone appeared ____ May 1999 in Japan.

• since

• for

• on

• in

We don't know what ____ to help the community.

• did

• doing

• do

• to do

We don't know what ____ to help the community.

• did

• doing

• do

• to do

We don't know what ____ to help the community.

• did

• doing

• do

• to do

I lived ____ Long An.

• for

• in

• at

• on

I lived ____ Long An.

• for

• in

• at

• on

I lived ____ Long An.

• for

• in

• at

• on

My brother always ____ soccer in the stadium.

• plays

• is playing

• play

• to play