Hello Daisy! Thank you for submitting your homework. ^^

1.anxious= My brotheris anxious
CORRECT: My brother is anxious.

>>There should be a space between words.

2.straight=I going straight now
CORRECT: I am going straight now.

>>Don't forget the correct form of a present progressive tense.

3.block=The blok color is yellow
CORRECT: The block's color is yellow.

>>Be mindful of the correct spelling of a word. To show possession, an 'apostrophe + s' is place after the subject.

4.mall=The mall is big
CORRECT: The mall is big.

5.directions=The directions is strange
CORRECT: The directions are strange.

>>Plural subjects take plural verbs.