Answer:
It is a complex sentence.
Explanation:
It contains one independent clause and a subordinate clause. Therefore it is a complex sentence
Each verb in English has two participles, they are present participle and a past participle. You use the present participle in the present progressive tenses, which indicate that an action is ongoing or continuous. For regular verbs, the present participle uses the ing form of a verb
The past participle helps form the present perfect tense because this tense spans both the past and present. Regular past participles are formed by adding ed to the verb.
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