Dig is an irregular verb.
dig = base form of verb
digs = third person singular form - used with he/she/it or singular noun subjects
dug = past form
dug = past participle
digging = present participle
"You have begun" is correct.
The correct form of the verb "promise" in the sentence "He did as he promised." is already correct.
The principal part of the verb "dig" in sentence 4 would be "dug," which is the past tense form of the verb.
in that form no, but grumble is. Grumbled is the past tense form of the verb grumble :)
The correct form of the verb "estar" for nosotros is "estamos."
"You have begun" is correct.
The correct form of the verb "promise" in the sentence "He did as he promised." is already correct.
The principal part of the verb "dig" in sentence 4 would be "dug," which is the past tense form of the verb.
in that form no, but grumble is. Grumbled is the past tense form of the verb grumble :)
The correct form of the verb "estar" for nosotros is "estamos."
The correct verb form depends on whether the company name is singular or plural. The verb form should agree with the noun.
The correct form of verb of the sentence "This property is for sale, sell" is "sale".
Observe is a verb
The correct form is "does it imply", as "imply" is the base form of the verb and is used with the auxiliary verb "does" in interrogative sentences.
Indulge/indulges is the correct present tense form.
The correct form is When did I come? (I did come when).
The verb in that sentence is "take". It's not the correct form, though. The correct form is "takes".