Anh ấy [mở cửa sổ/đang mở cửa sổ].

Complete follow-up in a large simple trial will require innovative methodology since frequent patient contact will not be possible. Cooperation with patient ... atives were used to complete follow-up information. In case a major adverse ... Continuous variables were compared using independent sample t test ... Self-Practice EXERCISE 3.1. Read the following sentences. Underline the subjects and circle the prepositional phrases. The gym is open until nine o'clock ... ... following words shall have the following meanings unless the context clearly requires otherwise: ... simple majority of all members of the town council or ... On a separate sheet of paper, complete the following sentences by changing the given verb form to a modal auxiliary in present perfect tense. The man ______ ( ... Dec 25, 2023 ... Can you explain why past perfect continuous is used in the following sentence? ... Why is the present perfect tense used in sentences like "I have ... varying atmospheric stability regimes using measurements from a single scanning lidar; ... include the following sentence: “these levels were chosen to create ... Apr 20, 2015 ... ... present simple isn't possible in these sentences. ... Why is the present continuous tense used instead of the present simple in the following ... Oct 3, 2020 ... Complete the following sentences with either 1) the simple present form of the verb, or 2) the present progressive form of the verb. Jul 3, 2020 ... ” When a present participle is used as postmodifier, it is usually a simple tense in a ... sentences above have a perfect tense and whose present.