Irregular verbs checking

Give the Past Simple tense of the verb "think"

Give the Past Simple tense of the verb "throw"

Give the Past Simple tense of the verb "understand"

Give the Past Simple tense of the verb "wear"

Give the Past Simple tense of the verb "win"

Give the Past Simple tense of the verb "write"

Give the Past Simple tense of the verb "leave"

Give the Past Simple tense of the verb "teach"

Give the Past Simple tense of the verb "buy"

Give the Past Simple tense of the verb "know"